JPH09215466A - Usage of harmful organism repellent and device therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for using peppermint oil with improved repelling effect as a harmful organism repellent, and to provide a device therefor. SOLUTION: Peppermint oil 10 as a harmful organism repellent is reserved in a vessel 30 to impregnate a wick stood in the vessel with the peppermint oil 10 which is then heated and transpirated. The other objective device is made up of the vessel 30 to reserve the peppermint oil 10 as the repellent, the wick 3 stood in the vessel 30 to impregnate it with the peppermint oil 10, a heater 4 to heat and transpirate the peppermint oil 10 impregnated, and a temperature control means for heating the peppermint oil 10 impregnated.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a method of using a repellent which repels pests and a device suitable for use.

[0002]

2. Description of the Related Art Rats, cockroaches, flies, mosquitoes, and the like settle in or intrude indoors in houses, stores, warehouses, etc., and have an adverse effect on humans and animals in terms of prevention of epidemics. Menthol is known as a repellent for repelling these harmful animals (see Japanese Patent Publication No. 61-15041).

Conventionally, when menthol is used as a pest repellent, menthol is dissolved or dispersed in a liquid diluent, mixed with a solid carrier or adsorbed on a solid carrier. Then, it is directly sprayed, sprayed, applied, adsorbed on a piece of paper, a piece of cloth, or contained in a microcapsule at a place where a harmful animal inhabits, hides, or wanders. In this case, the liquid diluent is an organic solvent such as water or alcohol, and the solid carrier is a diluent or a bulking agent such as vegetable powder such as soybean powder or mineral powder such as bentonite.

However, when menthol is used as a pest repellent as described above, there is a problem that the repellent effect against pests is not so high.

[0005] For example, in the case of spraying, not only the mist-like droplets drop relatively quickly (in about 5 minutes) and the effect disappears, but also the floor or the like gets wet and smells on the floor due to the fall. .

By the way, mint oil is a colorless or pale yellow essential oil that is distilled out by steam distillation of Japanese mint and Western mint hay, and its main component is menthol.

[0007]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problem of repellent effect of menthol and to use a peppermint oil as a pest repellent with an improved repellent effect and an apparatus therefor. To provide.

[0008]

The method of using a pest repellent and the apparatus for using a pest repellent of the present invention achieve the above object, and a method of using the pest repellent of the present invention is: This method comprises storing mint oil as a pest repellent in a container, impregnating a wick standing upright in the container with the mint oil, and then heating the impregnated mint oil to evaporate.

The apparatus for using pest repellent of the present invention comprises a container for storing mint oil as a pest repellent, and a liquid-wicking core erected in the container for impregnating the mint oil. A heater that heats and vaporizes the impregnated peppermint oil, and a temperature control means that heats the impregnated peppermint oil.

When it is evaporated, it has a unique irritating odor different from that of mint spray, and it is effective for extermination. Also,
Unlike sprays, it does not drop on the floor and get wet, and on the contrary, it can be easily scattered outside by opening a window. Humans do not cough with this odor.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION The method of using the pest repellent of the present invention is such that vapor of peppermint oil is positively present in the air in order to repel pests from indoors such as residences, shops and warehouses. To Therefore, after the peppermint oil is impregnated into the absorbent core, the impregnated peppermint oil is heated to evaporate.

At this time, if the heating temperature of the mint oil to be heated is less than 50 ° C., a peculiar irritating odor is not felt, and the evaporation rate of the mint oil is reduced to sufficiently vaporize the mint oil in the air. It takes a long time to exist. Not only that, even if the same amount of steam is present as compared with steam at 50 ° C. or higher, the effect of repelling harmful animals is small. on the other hand,
When the heating temperature of mint oil exceeds 90 ° C, the transpiration rate of mint oil increases. However, when mint oil is used as a pest repellent, such transpiration rate is not practical and There is a danger that the absorbent core impregnated with peppermint oil is easily burnt out.

As described above, the steam of peppermint oil exhibits an excellent repellent effect, unlike the sprayed liquid, that the steam of peppermint oil has a good staying property in the atmosphere, and it adheres to an article to give off a smell. It has no residual odor and leaves good ventilation. The odor of mint oil below 50 ° C is mostly due to menthol, whereas the steam above 50 ° C is
It is considered that the odor of menthol is reduced and components other than menthol give a peculiar irritating odor to the eyes and nose of harmful animals.

The apparatus for using a pest repellent of the present invention is used for positively causing the steam of mint oil to exist in the air, and for impregnating the container for storing the mint oil and the mint oil. The container is provided with a liquid-wicking core erected in the container and a heater for heating and vaporizing the impregnated mint oil.

In order for the liquid absorbent core to uniformly receive radiant heat from the heater, it is preferable to wind the top of the liquid absorbent core with a thin plate made of a metal or alloy having good thermal conductivity such as Al or Cu. If only the absorbent core is used for half a month, the absorbent core will be burned and hardened and cannot be used. On the other hand, if it is wrapped with a thin metal plate ring, it can be used continuously for about 2 months.

Further, in order to adjust the evaporation rate of the impregnated peppermint oil appropriately and to keep it as constant as possible, the above-mentioned apparatus for use also comprises means for controlling the temperature for heating the impregnated peppermint oil. To do.

Further, in order to (1) make the concentration of the evaporated mint oil as uniform as possible, and (2) make the device easy to carry, the above-mentioned device for use has a casing having a discharge port for discharging the evaporated mint oil. You may prepare.

FIG. 1 is a front view of an embodiment of an apparatus for using a pest repellent of the present invention, and FIG. 2 is a container and a liquid absorbent core of the apparatus for using a pest repellent of the present invention. It is sectional drawing which shows the state which assembled the heater.

1 and 2, a device for using a pest repellent according to the present invention comprises containers 20 and 21 for storing mint oil (Japanese Pharmacopoeia) 10 and mint oil 10 standing in the containers 20 and 21. Liquid core 3 made of cotton yarn knitted to a thickness of 8 mm, for example, and mint oil 1
It is composed of a heater 4 for heating 1 to evaporate, a temperature control means (not shown) for heating the impregnated mint oil 11, and a casing 50 having a discharge port 51 for discharging the evaporated mint oil.

The container 20 and the container 21 are the same, and the mint oil 10, the liquid absorbent core 3 and the heater 4 stored in the container 20 and the container 21 are also the same.

The container 20 comprises a container body 22, a container lid 23 and a liquid absorption core support tube 24. These are preferably made of stainless steel sheet. The peppermint oil 10 is stored in the container body 22 to a predetermined level. Liquid absorption core support tube 24
In order to allow the peppermint oil 10 to easily flow into the liquid-wicking support tube 24, a number of small holes 25 are formed in the lower portion of the oil-wicking support tube 24 and are bonded to the bottom of the container body 22. Then, when the liquid absorbent core 3 is inserted into the liquid absorbent core support pipe 24, the liquid absorbent core 3 is erected in the liquid absorbent core support pipe 24 and is immersed in the peppermint oil 10,
The peppermint oil 10 is impregnated into the absorbent core 3.

The container lid 23 has a transpiration port 26 at the center of the inside through which the mint oil that has been heated and evaporated evaporates.
A heater 4 is attached to the. Then, by fitting the container body 22 and the container lid 23, the liquid absorbent core 3
Are located inside the heater 4 with the same center, and the mint oil 11 impregnated with the liquid absorbent core 3 can be heated by the heater 4 from around the top of the liquid absorbent core 3 substantially uniformly.

The heater 4 is, for example, in the shape of a hollow disk having a central hole of about 1 cm, detects the temperature of the mint oil 11 and sends a signal to the temperature control means (not shown). Upon receiving the signal, the peppermint oil 11 is heated.

FIG. 3 is a sectional view similar to FIG. 2 showing another embodiment of the present invention. Since wiring such as the heater 4 is attached to the container 20, it may take some time to replenish the peppermint oil 10. Therefore, instead of directly storing the peppermint oil 10 in the container 20, the peppermint oil 10 may be contained in the plastic container 30 and placed in the container 20.
The container 30 includes a container body 32, a container lid 34, a core guide 36.
Consists of In this mode, the plastic container 30 can be taken out and the peppermint oil 10 can be replenished, which is convenient. The plastic core guide 36 is attached to the metal thin plate ring 38.
7 to 8 mm away from and protected from heat.

In the temperature control means, the load applied to the heater 4 is turned on and off by a preset temperature stored in advance and a heating program.

The casing 50 is made of a thin iron plate such as stainless steel, and has a discharge port 51 for discharging evaporated mint oil, a fan 52 attached to the discharge port 51, an intake port 53, and an opening / closing door 5.
4 and a carrying handle 55.

When operating the apparatus for using the pest repellent of FIG. 1, a predetermined amount of mint oil 10 is stored in the container body 22 of the container 20, and the liquid absorbent core 3 is erected on the liquid absorbent core support tube 24. rear,
The container body 22 and the container lid 23 are fitted together. Two containers 20 thus assembled are placed in the casing 5. Then, the opening / closing door 54 of the casing 50 is closed.

Next, the set temperature of the peppermint oil 11 and the heating program are set in the temperature control means. Further, after inserting the outlet connected to the heater 4 into a load of 100V, the heater 4 is turned on.

[0029]

【Example】

[Example 1] 20 tsubos in an empty warehouse (5 spaces vertically, 4 spaces horizontally)
Was partitioned off, and a space of 2 m in height was surrounded by a transparent vinyl plate. 20 mice were released in this space. After standing for 1 hour, a part of the lower side (2 horizontal, 30 cm vertical) of one side (4 horizontal, 2 m high) of this space was opened. After 30 minutes, 10 or more remained in the above compartment.

Next, the pest repellent use device shown in FIGS. 1 and 2 was placed in the center of the above compartment.

The following is a more specific description of the apparatus for using the pest repellent described above. That is, the mint oil 10 used in (1) has a common name of mint oil of the Japanese Pharmacopoeia, a trade name of lightly-packed white oil, and a menthol content of the main component of 39.30% by weight. This peppermint oil 1
0 was stored in the container body 22 at 280 cc. (2) The top of the liquid absorbent core 3 was wrapped with a thin plate (not shown) made of Al. This A
7 to 8 mm between the thin plate made of l and the liquid absorption core support tube 24.
There is a gap between. (3) As the heater 4, Co, N
A thermistor obtained by sintering an oxide such as i into a hollow disk was used.

FIG. 4 is a circuit diagram of a device using the above-mentioned harmful animal repellent. 4 temperature control means (National TB2
01, AC100V, 10A), the heating temperature of the peppermint oil 1 was set to 80 ° C. and the heating time was set to 8 hours.
The heaters 0 and 21, the temperature control means, and the fan 52 were turned on.

Immediately after the heating time of 8 hours, the 20 mice were released into the space. It was left as it was for 1 hour.

After standing for 1 hour, a part of the lower side of the above space (2 horizontal)
30 cm in length) was opened. Then, 20 mice are 3
All went out in minutes.

[Example 2] Thirty days after the test of Example 1, 20 mice used in Example 1 were used again and the same test as in Example 1 was conducted. All the 20 mice left for 1 hour in the atmosphere in which the peppermint oil 10 was evaporated had gone out in 4 minutes.

[Embodiment 3] An area of 20 tsubo (5 vertical) in an empty warehouse
Partition, and a space of 2 m in height was surrounded by a transparent vinyl plate. Twenty cockroaches were released in this space. After leaving for 1 hour, one side of this space (4 horizontal sides,
A part of the lower side (width 2 m, length 30 cm) of the height 2 m) was opened. After 30 minutes, 10 or more remained in the above compartment.

Next, the apparatus for using the pest repellent of Example 1 assembled in the same manner as in Example 1 was placed in the center of the above compartment.

The peppermint oil 10 was heated under the same conditions as in Example 1 (heating temperature 80 ° C., heating time 8 hours) to evaporate the peppermint oil 10.

Immediately thereafter, the 20 cockroaches were released into the space. It was left as it was for 1 hour.

After left for 1 hour, a part of the lower side of the above space (2 horizontal)
30 cm in length) was opened. Then all 20 cockroaches went out in 6 minutes.

[Example 4] Thirty days after the test of Example 3, 20 cockroaches used in Example 3 were used again and the same test as in Example 3 was performed. Twenty cockroaches left for 1 hour in the air evaporated with peppermint oil
It all went out in 7 minutes.

[Embodiment 5] An area of 20 tsubo (5 vertical) in an empty warehouse
Partition, and a space of 2 m in height was surrounded by a transparent vinyl plate. 20 flies were released in this space.
After standing for 1 hour, one side of this space (4 horizontal, 2 high)
The central part (30 cm square) of m) was opened. Even after 30 minutes, 10 or more remained in the space.

Next, the apparatus for using the pest repellent of Example 1 assembled in the same manner as in Example 1 was placed in the center of the above compartment, and peppermint oil 10 was evaporated in the same manner as in Example 1.

Immediately thereafter, the 20 flies were released into the space. It was left as it was for 1 hour.

After standing for 1 hour, the central portion (30 cm square) on one side of the above space was opened. Then, all the 20 flies went out in 4 minutes.

[Example 6] Thirty days after the test of Example 5, 20 flies used in Example 5 were used again and the same test as in Example 5 was carried out. The 20 flies that had been left in the air in which the peppermint oil 10 had been evaporated for 1 hour all went out in 5 minutes.

[Embodiment 7] 20 tsubo in the empty warehouse (5 vertical)
Partition, and a space of 2 m in height was surrounded by a transparent vinyl plate. 20 mosquitoes were released in this space.
After standing for 1 hour, one side of this space (4 horizontal, 2 high)
The central part (30 cm square) of m) was opened. Even after 30 minutes, 10 or more remained in the space.

Next, the apparatus for using the pest repellent of Example 1 assembled in the same manner as in Example 1 was placed in the center of the above compartment, and the peppermint oil 10 was evaporated in the same manner as in Example 1.

Immediately thereafter, the 20 mosquitoes were released into the space. It was left as it was for 1 hour.

After standing for 1 hour, the central portion (30 cm square) on one side of the above space was opened. Then all 20 mosquitoes went out in 5 minutes.

Example 8 After 30 days from the test of Example 7, 20 mosquitoes used in Example 7 were used again and the same test as in Example 7 was conducted. The 20 mosquitoes left in the air vaporized with mint oil 10 for 1 hour all went out in 7 minutes.

As described above, in Examples 1 to 8, the space for evaporating the peppermint oil 10 had a space of 20 tsubo and a height of 2 m.
However, even if the width is changed within the range of 10 to 30 tsubo,
It was found that the same repellent effect was obtained for each pest.

Further, if the above-mentioned area is less than 10 tsubo, even if the number of containers 20 and 21 is reduced to one and the amount of mint oil stored in that one container is set to 140 cc, it will not affect each pest. It was found that the same repellent effect can be obtained. In this case, it was used for 8 hours a day at a temperature of 80 ° C., and was used up for about 1 month.

Although a small can of 140 cc was used in the above embodiment, a can of 7.5 liters is used, and the size of the casing can be increased to 300 × 450 × 400 mm.

[0055]

INDUSTRIAL APPLICABILITY By the method of using the pest repellent of the present invention and the apparatus for the same, many kinds of pests can be repelled with an excellent repellent effect. Moreover, the repellent effect can be maintained for a long period of time.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of an apparatus for using a pest repellent according to the present invention.

FIG. 2 is a cross-sectional view showing a state in which a container, a liquid absorbent core, and a heater of the device for using pest repellent of the present invention in FIG. 1 are assembled.

FIG. 3 is a sectional view similar to FIG. 2 showing another embodiment of the present invention.

FIG. 4 is a circuit diagram of an apparatus for using a pest repellent of Example 1.

[Explanation of symbols]

 3 Liquid absorption core 4 Heater 10 Mint oil stored 11 Mint oil impregnated in liquid absorption core 20, 21, 30 Container 22, 32 Container body 23, 34 Container lid 24 Liquid absorption core support pipe 25 Small hole 26 Evaporation Port 36 Absorption core guide 38 Metal thin plate ring 50 Casing 51 Discharge port 52 Fan 53 Intake port 54 Open / close door 55 Handle

Claims (5)

[Claims] 1. Mint oil as a pest repellent is stored in a container, and a wick standing upright in the container is impregnated with the mint oil, and the impregnated mint oil is heated to evaporate. A method of using a pest repellent consisting of: 2. The method for using the pest repellent according to claim 1, wherein the heating is performed at a temperature of 50 to 90 ° C. 3. A container for storing peppermint oil as a pest repellent, a liquid-wicking core standing upright in the container for impregnating the peppermint oil, and the impregnated peppermint oil being evaporated by heating. An apparatus for using a harmful animal repellent, which comprises a heater for controlling the temperature and a means for controlling the temperature for heating the impregnated peppermint oil. 4. The apparatus for using a pest repellent according to claim 3, comprising a casing having a discharge port for discharging evaporated mint oil. 5. The apparatus for using a pest repellent according to claim 3, wherein the liquid absorbent core has a top portion wound with a thin plate of a metal or alloy of Al or Cu.