JP3489691B2 - Fan-type insecticide / insect repellent method and device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fan-type insecticide / insect control method, and more particularly to a volatile insecticidal / insecticide method.
The present invention relates to a method of causing insecticidal and insecticidal action by volatilizing an insect repellent at room temperature using a small fan using a battery.

[0002]

2. Description of the Related Art A fan (power source is a rechargeable battery or a solar battery) blows air toward a medicine as seen in the insecticide (Tensho Denki Kogyo) disclosed in Japanese Utility Model Publication No. 61-182273.
It has a system to volatilize the drug. In such a method for volatilizing a drug, the amount of the drug volatilized from each part of the support is uneven, and the average amount of volatilization cannot be stably ensured. In addition, this method also has a drawback in that the end point display function by the leuco method or the writing method, which indicates the remaining amount of the drug, cannot be sufficiently exerted.

Further, there has been a demand for a fan-type insecticidal / insecticide method which uses a dry battery, is convenient to carry, can be used for a long time, and can be stably and sufficiently volatilized.

[0004]

DISCLOSURE OF THE INVENTION The inventors of the present invention have found that it is difficult to uniformly blow air to a drug surface by a method of blowing air toward the drug and volatilizing the drug. The present invention has been made through intensive research into whether or not it is possible, and the present invention aims to achieve uniform air flow and to recover the economical efficiency that has been lost due to the inability to perform uniform air flow. ( EN) A fan-type insecticidal and insecticidal method and a device thereof that can be used for a long time and can be stably and sufficiently volatilized.

[0005]

SUMMARY OF THE INVENTION According to the present invention, a holding body made of an impregnating material having a plurality of holes having a gas rectifying function and holding a volatile insecticide / insecticide is provided on a suction port side of a fan. Fan-type insecticide / insect repellent that can be installed in the
And the depth d and the apparent hole diameter R of the holding body.
The d = (3~30) R (R = Ls / nπ, Ls = holder horizontal
Total length of inner circumference of each hole in cross section, n = hole of holder
And (1): Si / Wq = (0.1 to 2.0) (Si = hold
Total internal surface area of each hole in the body = nπRd, Wq = pass through the holder
Volume of air (cm ³ / Sec)) and (2) : Wv = wind velocity in the holding body = 20 to 100 cm /
This is a fan-type insecticidal / insect control method characterized by being seconds , which allows uniform blowing of the drug. Well
In addition, the present invention has an impregnating property for holding a volatile insecticide / insecticide.
Laminated flat plate and corrugated plate with gas rectifying function
A laminated cardboard-shaped holder is installed on the suction side of the fan.
Fan type, characterized by being able to use a dry battery as a power source
This is an insecticidal / insect control device, which allows for uniform
A fan-type insecticide / insect control device that can blow air can be provided. Well
In addition, the present invention has an impregnating property for holding a volatile insecticide / insecticide.
Laminate a flat plate of material and a corrugated plate so as to have a gas rectifying function.
A laminated corrugated cardboard-shaped holder is installed on the suction side of the fan.
With a fan-type insecticide / insect repellent device that can be installed and powered by dry batteries
Therefore, the depth d of the holding body and the apparent hole diameter R are
= (3 to 30) R (R = Ls / nπ, Ls = crossing of carrier)
Total length of the inner circumference of each hole on the surface, n = hole of holder
Fan type insecticidal / insecticide equipment characterized by
This allows for uniform blowing of the drug.
We can provide fan-type insecticide / insect control device.

Further, by specifying the porosity and depth of the holder within a predetermined range, it is possible to effectively volatilize the drug from the surface of the holder and extend the battery life. Furthermore, by holding a volatile insecticidal / insecticide at the same time as the end-point indicator substance by the leuco method or the brush method on the support, an endpoint display function to notify the end of the insecticidal / insecticide action (the volatile insecticide / insecticide is Volatilization,
It is convenient to use because it can be equipped with a system that changes color and informs when the insecticidal / insecticide activity decreases.

In the present invention, the holder has at least one or more holes through which a gas passes, and is made of an impregnating material holding an insecticide / insecticide, and the holes have a gas rectifying function. The hole basically has both end faces communicating with air outside the holder in a space formed by using an impregnating material as a wall, and basically has a structure for exerting a gas rectifying function. The structure of the hole is arbitrary, but preferably, the structure is such that the central axis of the hole is a straight line or a structure close to that. Specifically, the holder of the present invention preferably has the following relationship. The holder used in the present invention has a relationship between the apparent hole diameter and the holder depth, d = (3 to 30) R (d
= Depth of holder (unit: cm), R = Apparent hole diameter (unit: cm) = Ls / nπ, Ls = Total length of inner circumference of each hole in holder cross section (unit: cm), n = Number of holes in the holder) is preferable, and in particular d = (5 to 5
15) R is preferred. Here, the cross section of the holder means one cross section when an axis parallel to the depth of the holder is cut by a vertical plane. The holding body used in the present invention usually has a structure having both end faces as the cross section, and the distance between the both end faces is the depth.

Further, according to the present invention, Si / Wq = (0.
1 to 2.0) (Si = total inner surface area of each hole of the holder (unit: cm ² ) = nπRd, n = number of holes of the holder, R =
Apparent hole diameter, d = depth, Wq = air volume passing through the holder (cm ³ / sec)), and Wv = wind velocity in the holder = 2
It is preferable to satisfy 0 to 100 cm / sec. In particular,
Si / Wq = 0.2 to 1.0, Wv = 30 to 80 cm /
Seconds are preferred.

Here, Wv can be expressed by the following equation. Wv = Wq / Sa = Wq / (Sh-Sc) = Wq / (S
h-Ls · t (where, Sa = total area of each hole in the cross section of the holding body (unit: cm ² ), Sh = area of cross section of the holding body (unit: cm ² ), Sc = crossing of the holding body) Area of the impregnating material on the surface (unit: cm ² ), t = thickness of the impregnating material (unit: cm)) ... Here, Sa is the thickness (t) of the impregnating material itself constituting the holder. However, the impregnating material is not particularly limited as long as it can stably hold the insecticide / insect repellent in a normal use state and can volatilize the insecticide / insect insect during ventilation. The porosity (Vr) (%) of the holder can be expressed by the following formula.

Vr = 100d (Sh-Sc) / d · Sh
= 100 (Sh-Ls.t) / Sh ... Therefore, from the above, Wv = 100Wq / Sh.Vr ... In the present invention, Vr is 60 to 95%, particularly 70 to 9
0% is preferable.

That is, in the present invention, by optimally determining d, R, Si, and Sa, the optimum Wq, Wv,
It can be seen that Vr can be determined. Then, the present invention, by using a holder that satisfies the above conditions and by installing this holder in the suction port of the fan, the volatilization component of the insecticide / insecticide can be stably used for a long time at a voltage of the order of a dry battery. It can be vaporized very effectively and without waste.

Further, according to the present invention, the function of the indicator can be very effectively exhibited even when the end point display substance by the leuco method or the writing method, that is, the indicator is used together with the support. Hereinafter, specific embodiments of the present invention will be described.
In the present invention, the holding body is tubular and has holes (spaces) inside so that air can pass therethrough, and is arbitrary as long as it can carry a volatile drug.

For example, using the sirocco fan used in Example 1, a suction port (4 × 4 cm) or a blowout port (2 ×)
2cm) with attachments and the size of both mouths is 7 × 7
1 cm, the porosity shown in FIG. 1 is 78.6%, and the end surface is 7.
A 0 x 7.0 (cm), 1.5 cm deep holder is impregnated with an equal amount (initial value: 4.0 g) of insecticide / insecticide, and set in the suction port or blowout port for 7 hours every day for 7 hours. Started for days. After that, the holder is divided into three pieces in three parts vertically and horizontally,
The amount of each residual drug was measured, and the amount of reduction was used as the amount of volatilization.
Got the result.

[0014]

[Table 1]

Obviously, the installation of the suction port is superior in the average value and the standard deviation. The difference in the size of the opening before the expansion of both is not a problem when considering the form of the fan, since it is common sense that the suction port is large except for special ones such as an axial fan. Thus, in the present invention, the fact that the average value and standard deviation of the volatilization amount are superior to the conventional method is a completely new fact and is a feature.

Next, the shape of the holder will be described. A laminated cardboard is often used as the holder, and in this case, the properties are determined by the plate thickness of the flat plate and the corrugated plate and the height and pitch of the corrugated plate portion. The characteristics are analyzed with the holder illustrated in FIG. FIG. 1 is a partially enlarged view of a cross section of a holder, and the holder 1 is a laminated cardboard made of a hole 2 and a paper 3, and has an end surface of 7.0 × 7.0 cm, a depth of 1.5 cm, and 31 steps, 1
5 crests, 16 troughs, paper thickness 0.02 cm, pitch 4 (0.44
cm) and the height of one step is 5 (0.226 cm).

N = 961, Ls = 524 cm, Si =
Ls · d = 786 cm ² , Vr = 100 (49-0.0
2 × 524) /49=78.6%, R = 524/961
π = 0.17 cm. Here, as Ls, a value obtained by expanding the paper is used. Further, the present invention will be described using the above characteristic values. First, the rectifying action of gas will be discussed. For effective volatilization, it is necessary for the flow of gas within the holder to be in order. That is, it is necessary to consider the pipe diameter and the pipe length.
Therefore, the hole of the holder is not necessarily circular, but Ls is divided by the number of holes and considered as the circumference of one hole, and further divided by π to obtain the apparent hole diameter.

The relationship between the apparent hole diameter R and the depth d is
Trend investigated by the relationship between the amount of volatilized drug and the amount of drug
Is shown in FIG. Figure 2 shows the amount of air on the x-axis and the amount of volatile chemicals on the y-axis.
That is the case. a curve is the volatilization per unit time
The increase in x and the increase in y are proportional to a certain value due to changes in the drug amount
It can be seen that the increase in y decreases as time goes by. b song
The line is as the air volume increases with the change of y per unit air volume.
It means that the amount of drug per unit air volume gradually decreases.
It From the experimental value, the vicinity of the intersection of the a curve and the b curve in Fig. 2 is practical
The depth of the holder is within the target range and the apparent hole diameter is 1
It has been found that it is desirable that it is 3 to 30. Well
In addition, it is preferable that the above expressions and are satisfied.
I also understood. In the case of the holder of this example, 1.5 (d)
= 8.8 × 0.17 (R). Also pass through the holder
Is the amount of air flow related to Si / Wq = (0.1 to 2.0)?
Wq = 786 / 0.1-2.0 = 393-7860
cm ³/ Second range is preferable, and the wind speed Wv is Wv
= Wq / (Sh-Sc) = (393 to 7860) / (4
9-0.02 ・ 524) = 10.2 to 204.0 cm /
It can be seen that the range of seconds is preferred.

In such a system, as shown in Example 1, it is possible to operate for 12 hours and 30 days or more every day while achieving a predetermined amount of volatilization system drug with two single batteries. Further, in the present invention, it is possible to display the time when the drug is volatilized and decreased, and the effect becomes ineffective. This is called an end point display function, and a known technique called a leuco method or a writing method can be used. In the leuco method, a volatile chemical (insecticide / insect repellent) is mixed with an electron-donating color-developing organic compound (alone or with a color developer added) and impregnated into paper, cloth, etc. This is a method in which the color is changed by the disappearance of the volatile chemicals (JP-A-62-
163965).

In the water brush method, a colored impregnated body is impregnated with a volatile chemical and fine particles of titanium oxide are adhered to the surface,
This is a method in which the original color that has been colored is changed to white of titanium oxide with the disappearance of the volatile chemicals (JP-A-57-1).
58682). The present invention is based on a new finding in the application of such a known technique to a fan-type insecticidal / insect control device.

When a fan is operated to blow air on a holder impregnated with a drug and a leuco body, the surface on which the wind first hits is colored on each surface of the holder due to the unique coloring mechanism of the leuco body.
When the holding body is installed at the suction port as in the present invention, the outer surface of the holding body is colored, which is preferable because the end point can be easily observed from the outside. On the other hand, when the holder is installed at the outlet, coloration occurs on a surface that is difficult to observe from the outside, which is not preferable.

Examples of the volatile insecticide / insect repellent suitable for the present invention include the following substances. Empenthrin, fenfluthrin, benfluthrin, flamethrin, d-allethrylene, resmethrin, etok, fenvalerate, phenothrin, cyphenothrin, permethrin,
Cypermethrin, tetramethrin, diet, isobornyl thiocyanoacetate, S-421, DDVP,
Diazinon, fenitrothion, thymol, phenyl salicylate, etc.

The material and shape of the holder are considered as follows. The most convenient material is paper. Both bleached and unbleached are possible and inexpensive. Alternatively, synthetic fibers, non-woven fabrics, etc. may be used. The shape may be a fixed type such as a laminated cardboard or a spiral corrugated cardboard, or a foldable type such as a well shape in which cut board is crossed.

Regarding the present invention, the following components other than the volatile insecticide / insect repellent can be used together. Potency enhancers such as S-421, Cinepyrine 222, Cinepyrine 500, pipernidobutoxide, agents that regulate volatilization rate, such as dibasic acid diesters and liquid high-boiling alcohol esters used as plasticizers, and other repellents. There are agents, fragrances, and colorings.

[0025]

EXAMPLES Examples of the present invention will be shown below. However, the present invention is not limited to these examples. Example 1 A sirocco fan having a diameter of 6.0 cm, a width of 2.7 cm, and a turbine blade of 18 blades was mounted. Insecticidal / insect control equipment (motor starts with two single batteries, inlet diameter 5.2 cm, outlet:
A suction body having a width of 3.1 cm and a length of 4.8 cm is provided with a 7.0 × 7.0 cm holder part by an attachment, and the next holder is set.

The holder is a layer of white cardboard (120 g white / 120 g white, 31 steps, 0.226 cm step height, 0.44 cm corrugated sheet pitch, 0.02 cm paper thickness) laminated cardboard (space ratio 78.6). %) 7.0 cm in length and 7.0 c in width
m, depth 1.5 cm, empensulin 4.
It is made by uniformly impregnating with 0 g. 2 such insecticide / insect control equipment
It was started up at 5 to 29 ° C for 12 hours every day for 7 days.

Thereafter, the residual empensulin was measured and found to be 3.140 g, and the amount of volatilization was 0.860 g. The amount of volatilization was 0.123 g per day and 10.2 mg per hour, which was a sufficient amount of the drug to obtain the insecticidal and insecticidal effect of a 6-8 tatami room. Next, when the amount of air (Wq) passing through the holding body during startup was measured with an adapter, it was 1470 cm ³ / sec. And Si / Wq was 0.55.

This air volume and the void ratio (Vr) of the holder 78.
When the Wv in the retainer was calculated from 6%, it was 38.2 cm / sec. The depth d was 8.8 times the apparent hole diameter (0.17 cm) of the holder. Example 2 Insecticidal / insect repellent device equipped with an axial fan of a propeller blade having a diameter of 6.0 cm and a body diameter of 6.5 cm (5 AA, 2 AA batteries)
Start the motor by itself, and set the following holder to the suction port of suction port 7.0 x 7.0 cm, outlet: φ6.5 cm).

The holder is a paperboard 2 having a length of 7.0 cm, a width of 2.0 cm, and a thickness of 0.05 cm, in which 14 notches are provided at intervals of 0.5 cm from a roller 0.25 cm away from the end.
Eight pieces are divided into two sets, vertical and horizontal, and the notches are combined and assembled in a well shape (vertical 7.0 cm, horizontal 7.0 cm,
A depth of 2.0 cm, n = 196, Ls = 392) was uniformly impregnated with 1.5 g of empensulin.

The insecticidal / insecticide equipment was activated in a camping tent (4 m × 5 m) for 3 consecutive days. The temperature during this period was 24 to 31 ° C. After that, the residual empensulin was measured in the same manner as in Example 1 and the volatilization amount was determined.
It was 0.710 g. This volatilization amount is
The amount of drug was sufficient to obtain an insect repellent effect. Next, when the amount of air passing through the holding body being started was measured, it was 1250c.
It was m ³ / sec. In addition, Si / Wq = 0.63.

When Wv in the holder was calculated from this air volume and the void ratio of the holder of 81%, it was 31 cm / sec, and the depth was 3.1 times that of the apparent hole diameter of 0.64 cm. Example 3 In Example 1, in place of the fact that the drug impregnated in the support was only 4.0 g of empensulin, 4.0 g of empensulin, R-40 (Yamamoto Kasei Co., Ltd., phthalide leuco compound). 0125 g and bisphenol A0.
The mixture was uniformly impregnated with 125 g of the mixture, started for 12 hours a day, and continued every day until the outside of the support changed color.

As a result, the red color began to appear from around the 20th day, and on the 28th day, it became the preset red color and was set as the end point. In order to measure the volatilization amount of empenthrin at this end point, an adapter was provided at the blow-out port, the device was activated for an additional 1 hour, and the volatilized empensulin was adsorbed on the powdered silica gel and then quantified. The result was 0.008 g (0.008 g of empenthrin / H) satisfied the necessary amount of insecticidal and insecticidal effect in a 6-8 tatami room.

During this period, the single battery is 2.60V / 2.
Although it was reduced to an in-series, it could be used sufficiently. Comparative Example The same procedure as in Example 3 was carried out except that the holder used in Example 3 was installed at the outlet of the fan, and the end point change was observed from the outside, but no discoloration occurred.

[0034]

The fan-type insect / insect control device consumes less energy than a method of heating and volatilizing the insect / insect control component, and a normal dry battery can be used as a power source. This releases the power source and facilitates indoor and outdoor movement as well as campsite use. Furthermore, the general power source is 100
In the case of a dry battery, the safety is improved to 3V as compared to V.

[Brief description of drawings]

FIG. 1 is a view showing a cross section of an example of a holder used in the present invention.

FIG. 2 is a graph showing the relationship between the amount of volatilized drug and the amount of air flow.

[Explanation of symbols]

1 holder Two holes 3 paper 4 pitch 5 1 step height

Claims (7)

(57) [Claims] 1. A holder made of an impregnable material having a plurality of holes having a gas rectifying function and holding a volatile insecticide / insecticide is installed on a suction port side of a fan, and a dry battery is used as a power source. so
A fan-type insecticide / insect repellent method, wherein the depth d and the apparent hole diameter R of the holder are d = (3 to 30) R (R = Ls / nπ, Ls = width of holder)
Total length of inner circumference of each hole in cross section, n = hole of holder
And (1): Si / Wq = (0.1 to 2.0) (Si = hold
Total internal surface area of each hole in the body = nπRd, Wq = pass through the holder
Volume of air (cm ³ / Sec)) and (2) : Wv = wind velocity in the holding body = 20 to 100 cm /
A fan-type insecticidal / insect control method characterized by being seconds . 2. The fan-type insecticidal / insecticidal method according to claim 1, wherein the holding body holds an end-point indicating substance by a leuco method or a writing method. 3. An impregnating material holding a volatile insecticide / insecticide.
Product in which a flat plate and a corrugated plate are laminated so as to have a gas rectifying function
A layer corrugated cardboard-shaped holder is installed on the suction side of the fan.
Fan type, characterized by being able to use a dry battery as a power source
Insecticide / insect control device. 4. An impregnating material holding a volatile insecticide / insecticide.
A flat plate and a corrugated plate are laminated to have a gas rectifying function.
A laminated cardboard-shaped holder is installed on the suction side of the fan.
However, it is a fan-type insecticidal / insect control device that can be powered by dry batteries.
I mean The depth d and the apparent hole diameter R of the holding body are d = (3 to 30) R (R = Ls / nπ, Ls = side of holder
Total length of inner circumference of each hole in cross section, n = hole of holder
Fan-type insecticide / insect control
apparatus. 5. (1): Si / Wq = (0.1 to 2.0)
(Si = total inner surface area of each hole of the holder = nπRd, Wq =
Volume of air passing through the holder (cm ^Three / Sec)), and (2): Wv = wind velocity in the holding body = 20 to 100 cm / sec
The fan-type killing according to claim 4, wherein
Insect / insect control device. 6. The impregnating material is paper.
The fan-type insecticide according to any one of claims 3 to 5,
Insect repellent. 7. The leuco body method or the water brush method is applied to the holder.
4. The end point display substance is retained, and the end point display substance is held.
7. A fan-type insect / insect repellent device according to any one of items 6 to 6.