JPH0246176B2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a pest control method.

Conventionally, cockroaches have been exterminated using chemical extermination methods using various chemicals and methods of spraying boiling water. As the former method of control, there is a method of injecting insecticide vapor using a steam jet, which is described in Japanese Utility Model Publication No. 14-9642. However, this method has problems in terms of safety, such as toxicity due to the drug, and dirty cleaning of the drug treatment surface, and it is not practical for controlling Tatami pests from the viewpoint of human safety and cleanup. There is. Furthermore, even if chemical vapor is sprayed, the vapor quickly evaporates and the temperature drops, so the insecticidal effect is not very high. As a method for controlling the latter, there is a method of spraying hot or semi-hot water (hot water at about 40 to 70° C.) on weed pests, as described in JP-A No. 49-66449. However, this method has the problem that it is impractical for exterminating Tatami pests because the area where the boiling water is sprayed becomes water-soaked, and furthermore, the temperature of boiling water drops quickly, so it is highly effective at killing insects. The problem is that there is no.

The present invention was completed as a result of intensive research from a completely new perspective while taking into account the above-mentioned conventional problems. That is, the present invention relates to a method for controlling pests such as cockroaches, termites, and tatami mats by applying hot air of 40° C. or higher at a wind speed of 1 m or higher to the pests for at least several seconds.

As mentioned above, the present invention is based on blowing hot air, so even if pests are controlled on the tatami, there is no toxicity and it is safe, the tatami is not contaminated, and cleaning up afterwards is troublesome. Moreover, the hot air can be blown not only into large areas but also into very narrow spaces, making it possible to carry out pest control work efficiently. Furthermore, since a relatively simple device can be used for blowing hot air, handling is simple and practical.

For the hot air in the present invention, conventionally used heat generating means can be used. Specifically, examples include a combination of a fan and an electric heater, a combination of a fan and heat generated by magnetism, a combination of an infrared lamp and a fan, and a combination of a fan using a semiconductor as a heating element, but the invention is not limited to these. It's not something you can do.

In the present invention, the temperature of heat for controlling pests such as cockroaches, termites, and tatami mats is not limited as long as it is 40°C or higher, but from a practical point of view and considering the risk of burns and fire, the temperature is between 40°C and 200°C. is preferred.

If the temperature is too low, the desired insecticidal effect may not be obtained, and if the temperature is too high, safety may be a problem.

In the present invention, it is sufficient that the heat treatment is performed for at least a few seconds, but the heat treatment may be performed intermittently for several minutes at a time. Furthermore, if necessary, processing may be performed intensively at one location for several seconds or more. Of course 1
It is also possible to process the process for several seconds or more over a wide area rather than just a single location.

In the present invention, when hot air is used, the wind speed is 1 m/s or more, preferably 1 m/s to 10 m/s.
It is used between the m order. If the wind speed is within this range, it is possible to immediately slow down the behavior of the pests, preventing them from escaping and making pest control easier, and the faster the wind speed is, the more advantageous it is to be able to carry out the specified treatment in a short time. . When this lower limit is exceeded, efficient treatment within a limited time is no longer possible, or the behavior of pests such as cockroaches cannot be stopped immediately, and the pests such as cockroaches move to other locations. This is not desirable because it allows the movement of

In the present invention, the method of sending hot air is not particularly limited. Usually, the hot air is blown in a straight line, but the hot air may be artificially expanded by giving rotation to it to create a change. By making this change, pests such as cockroaches that are exposed to the hot air become slow in their movements, easily fall over, and are prevented from escaping, which is advantageous because more effective control can be achieved.

In the present invention, the hot air treatment method for pests such as cockroaches, termites, and tatami can be either direct or indirect. A direct treatment method is a method that directly targets cockroaches and termites, while an indirect treatment method is a method that targets cockroaches and termites directly, while an indirect treatment method targets and treats areas where cockroaches, termites, and other pests are likely to be hiding (under countertops, areas where they appear at night, etc.). Drawers, backs of cupboards, behind gas ranges, under-floor storage, inside of cages, under food storage compartments such as refrigerators, inside closets, tatami)
A treatment method that uses heat to raise the temperature in and around the area to expel cockroaches and termites or cause them to die. In this case, the temperature of the treated area and its surroundings is 40
It goes without saying that the treatment is carried out so that the temperature is at least ℃.

In the case of hot air treatment in the present invention, a suitable blower is required, but this type of blower is not limited to one equipped with a suitable fan or a compressor.

Next, embodiments of the present invention will be explained.

FIG. 1 is a partially cutaway front view showing one example of the embodiment of the present invention, FIG. 2 is a partially cutaway front view showing another example of the embodiment of the present invention, and FIG. FIG. 4 is a partially cutaway front view showing still another example of the embodiment of the present invention.

In Figures 1 to 4, 1 is a main body, which is made of a heat-resistant material such as metal, and may be suitably heat-insulated. The generating mechanism 2 is shown as a combination of a blower 2a (in FIG. 1, the blower 2a is a fan, and in FIGS. 2 to 4, a compressor) and a heater 2b, but as mentioned above, the generator is not limited to this. isn't it. Also, a tube 3 is provided on the outside of the main body 1 via suitable attachment means. This pipe 3 is for sending heat such as hot air. FIG. 1 shows a case in which a flexible hose-like tube 3, which is advantageous for handling twisty gaps, is fitted into the injection tube 1a of the main body 1. In FIG. 2, a long nozzle with a sharp tip is attached as a tube 3 to the bottom of the main body 1. In this case, the tip of the long nozzle-shaped tube 3 is blank, and a plurality of ventilation holes 3a are provided on the side circumferential surface of the tube 3, so that hot air is ejected in all directions in the horizontal direction. Moreover, since the tip is sharp, it can be used to poke into areas where cockroaches and termites are likely to be hiding. In FIG. 8, a plurality of nozzle-shaped tubes 3 having a blank tip and a sharp edge are provided via springs 1b so as to be able to move in and out of the main body 1 while being connected to the blower tube 3-1. The case is shown. In this case, the ventilation holes 8a are provided on the side circumferential surface of the pipe 3 as in Fig. 2, and can be used as shown in Fig. 2, but since there are multiple pipes 3 in particular, pests on the tatami can be prevented. Suitable for pest control. In addition, since the tube 3 moves in and out through the spring 1b, the tube 3 remains inside the main body 1 and is safe when not in use. In FIG. 4, the pipe 3 is equipped with a drill, and has a groove 3c on the entire circumferential surface of the pipe 3, and this drill-duty pipe 3 is connected to a motor 1c having a hollow shaft 1d provided inside the main body 1. A case is shown in which the hollow shaft 1d is movably connected to a heat generating mechanism 2 consisting of a combination of a blower 2a and a heater 2b. in this case,
Since the pipe 3 also serves as a drill, the work is easy and advantageous when controlling pests such as termites hiding in lumber.

In FIGS. 1 to 4 above, reference numeral 4 denotes a gripping portion, and various types of gripping portions can be selected depending on the shape of the main body 1. Further, a helical guide member 3b is installed inside the tip of the pipe-like tube 3 shown in FIG. 1 in order to change the hot air. For this reason, insects that are exposed to hot air will fall over immediately, unlike when the wind blows in a straight line.
This makes it impossible for them to escape, making it easy to exterminate them with hot air. Furthermore, a cover 5 is provided at the tip of the nozzle-shaped tube 3 shown in FIG. 2, which can be adjusted using a screw 5a to prevent it from falling off, thereby preventing injuries from occurring at the tip when the tube 3 is not in use. It is advantageous. Since the cover 5 can be slidably moved on the circumferential surface of the tube 3, the depth of insertion can be determined in advance, which is advantageous in that it can prevent the tip of the tube 3 from being over-inserted.

Next, an explanation will be given based on embodiments of the present invention.

Example 1 Diameter that can accommodate a blower (100V, 1A, 8 blades, diameter 8cm, rotation speed 30000 per minute) and a heater (600W, planar heater with height 8cm, width 8cm, thickness 10mm) The cylindrical body is 10cm long and 20cm high, with a 5cm inner diameter air outlet on the heater side.
A flexible hose-like tube with an outer diameter of 5 cm and a length of 5 cm is connected by a connector, and the lower part of the cylindrical body is equipped with a grip part large enough to be grasped with one hand, and the method of the present invention is carried out. Got a pest control device for.

Insect killing test 1 1.5 m in height and 3 m in width as shown in Figure 5 A to B
Prepare two plywood boards with a thickness of 3 mm, set the plywood boards upright with a gap of 1 cm, and simultaneously install the walls on both sides.
Seal the top and bottom surface and seal the inside with multiple layers b ₁ ~
After creating a cockroach storage room with ₅ sections divided into 5 areas and a passage C in the vertical direction, a hole a with an inner diameter of about 5cm was made in a part of this plywood board, and 20 black cockroaches were placed inside the storage space. After inserting the tip of the hose-like tube (outer diameter approximately 5 cm) of the pest control device in Example 1 into the storage compartment through a hole drilled in a part of the plywood board, the switch on the main unit was turned on and heat was generated at 40°C. The mechanism was operated for 5 minutes, and after leaving it for 1 hour, the cockroach storage chamber was disassembled and the number of dead cockroaches in each chamber was confirmed, and a 100% insecticidal effect was obtained.

[Brief explanation of drawings]

1 to 4 are partially cutaway front views showing an example of an embodiment of the present invention, and FIGS. 5A to 5B are schematic views of a cockroach storage chamber used in an insecticidal test. In the figure, 1 is the main body, 2 is the heat generation mechanism, and 3 is the tube.

Claims (1)

[Claims] 1. A pest control method characterized by controlling pests by applying hot air of 40°C or more to pests such as cockroaches, termites, and tatami for at least several seconds at a wind speed of 1 m/s or more.