JP2000116301A - Device for controlling insect pest or the like, and control of insect pest or the like by using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for controlling an insect pest or the like, having a simple structure, capable of being readily treated, facilitating a safe insecticidal treatment in a short time, and further to provide a method for controlling the insect pest or the like by using the device. SOLUTION: This device for controlling an insect pest or the like has a treating room 2 housing a material S to be treated in a hermetically sealed state, a hot air-circulating apparatus 4 for circulating hot air in the treating room 2, an exhauster 5 for exhausting the air in the treating room 2 to the outside, and a nitrogen gas cylinder 6 for supplying nitrogen gas into the treating room 2. The hot air circulating apparatus 4 is equipped with an exhaust duct 4a installed in the upper part of the treating room 2, a blower 4c for sucking the air in the treating room 2 from the exhaust duct 4a, and a heater 4d for heating the air sucked by the blower 4c and supplying the heated air to the lower part of the treating room 2. A port 7a for supplying the gas from the nitrogen gas cylinder 6 and a sucking port 5a of the exhauster 5 are installed in mutually opposite parts so as to put a loading part 2c of the material to be treated in the treating room 2 therebetween.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for controlling harmful insects such as mites, lice, fleas and the like that inhabit futons, blankets, carpets, tatami mats and the like, and a method of controlling insects using the same. .

[0002]

2. Description of the Related Art Conventionally, as an extermination device for mites or the like living on a futon or the like, the prior art described in, for example, JP-A-2-16897 and JP-A-5-199827 is known.

In the former prior art, attention is paid to the fact that, in a circulating dryer capable of heating to about 90 ° C., the core of a futon or the like is unlikely to reach 50 ° C. or more for killing ticks and the like. The core portion of the futon or the like is heated at an early stage by sandwiching the futon or the like with a roller and repeatedly performing compression rolling. However, according to this apparatus, since it is necessary to sandwich the object to be processed between the rollers, it is difficult to perform a large amount of processing at a time, and the processing efficiency is not very good. In addition, since a reciprocating roller mechanism is required, handling is complicated, resulting in high production costs and high maintenance costs.

On the other hand, in the latter prior art, attention is paid to the fact that the insecticidal gas hardly penetrates into the interior of a futon or the like, and the processing chamber is filled with the insecticidal gas after the pressure is reduced by a vacuum pump. However, the prior art requires a gas decomposer or the like for disposing of the insecticidal gas in the processing chamber after the insecticide treatment, which increases the manufacturing cost and requires careful handling from the viewpoint of safety.

[0005]

DISCLOSURE OF THE INVENTION In view of such a conventional situation, the present invention provides an apparatus and a method for exterminating pests which are simple in structure and handling, and which can be safely and quickly treated. The purpose is to provide.

[0006]

In order to achieve the above object, a pest control apparatus according to the present invention is characterized by a processing chamber for accommodating an object to be processed in a sealed state, and a hot air circulating hot air in the processing chamber. A circulation device, an exhaust device for exhausting air in the processing chamber to the outside, and a non-oxygen gas supply device for supplying a non-oxygen gas containing no or low oxygen content into the processing chamber are provided. .

According to this feature, since the non-oxygen gas is supplied together with the decompression of the inside of the processing chamber by the exhaust device, the oxygen-containing gas permeates into the object to be processed in the processing chamber. Then, the oxygen concentration also decreases in the core of the object to be treated, and pests such as mites become difficult to breathe. When the temperature inside the processing chamber is increased by the hot-air circulation device in such a state, pests such as mites become active in metabolism, and in addition to being killed by heat, also killed by dyspnea. That is, the present invention is characterized in that the warming of the inside of the processing chamber by the hot air circulating device has a synergistic effect of controlling the metabolism by heat in addition to the direct control of the heat of mites and the like. Since non-oxygen gas is not an insecticide, exhaustion after the extermination operation can be performed quickly and safely.

An exhaust pipe provided in the upper part of the processing chamber, a blower for sucking air in the processing chamber from the exhaust pipe, and a heater for heating the air sucked into the blower. A heater for supplying the lower part of the room may be provided.

Further, a non-oxygen gas supply port from the non-oxygen gas supply device and a suction port of the exhaust device may be respectively provided at portions opposite to each other across a mounting portion of the processing object in the processing chamber. Good.

As the non-oxygen gas supply device, a nitrogen cylinder for supplying nitrogen gas as non-oxygen gas may be used.

On the other hand, the features of the method for controlling pests and the like using the above-described apparatus for controlling pests and the like are that air in the processing chamber is exhausted to the outside by the exhaust device, and non-oxygen is supplied into the processing chamber by the non-oxygen gas supply device. After supplying the gas, hot air is circulated into the processing chamber by the hot air circulating device.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure and use of a pest control apparatus 1 according to the present invention will be described in more detail with reference to FIGS. The apparatus 1 for controlling pests and the like according to the present invention includes a processing chamber 2 for storing an object to be processed in a sealed state.
And a hot air circulating device 4 for circulating hot air in the processing chamber 2.
A turbo fan 5 as an exhaust device for exhausting the air in the processing chamber 2 to the outside; and a nitrogen cylinder 6 as a non-oxygen gas supply device for supplying a nitrogen gas as a non-oxygen gas containing no oxygen into the processing chamber 2. Are provided.

The processing chamber 2 of the pest control device 1 is a box-shaped container formed of a stainless steel plate and provided with a heat insulating material on each wall, and a door 2a provided on the front face can be opened and closed by a hinge. It has become. Processing room 2
The inside of 2 is composed of pipes etc.
A stage mounting shelf 2b is provided. The processing chamber 2 can be mounted together with other members behind a wagon or a truck. Note that the above-described two stages of the mounting shelves 2b are collectively referred to as a processing object mounting portion 2c hereinafter.

The above-described hot air circulating apparatus 4 includes a circulating hole 2d provided at an upper portion of the back surface of the processing chamber 2 and a heater unit 4b provided at a lower portion of the back surface of the processing chamber 2 through an exhaust pipe 4a.
Connected by And this heater unit 4
b denotes a blower 4c for sucking air in the processing chamber 2 from the exhaust pipe 4a, and a heater 4d for heating the air sucked into the blower 4c and supplying the air to a lower portion of the processing chamber 2
And Further, the hot air circulation device 4 has a temperature control unit (not shown) and a temperature sensor for measuring the temperature near the outlet of the heater unit 4b.
The temperature near the outlet is maintained at about 90 ° C.

An exhaust hole 2e is formed in the upper part at the back of the processing chamber 2, and the suction port 5a of the turbo fan 5, which is an exhaust device, is attached so as to be aligned. The gas pipe 7 from the nitrogen cylinder 6 is inserted into the lower part of the processing chamber 2, and the gas pipe 7 a is located at the lower part of the processing chamber 2.

At three corners on the lower surface of the lower mounting shelf 2b,
Each has a diffusion fan 3 for diffusing the air in the processing chamber 2 upward. These diffusion fans 3 operate when filling the processing chamber 2 with nitrogen gas or circulating hot air.

Next, with reference to FIGS. 6 to 8, a cleaning device 2 for sucking and removing dead bodies such as mites from the processing target S which has been subjected to the extermination process of mites and the like by the pest control device 1 described above.
The structure of 0 will be described.

A frame 21 which is a main part of the cleaning device 20
Are supported by four legs 22. At the center of the frame 21, a band-shaped recess 23 is provided, on which a grill 25 is attached. At the bottom of the recess 23, two suction holes 23a, 23a are respectively formed, and a turbo fan 24 as a blower is attached to each of the suction holes 23a. And turbo fan 2
By operating 4, the inside of the concave portion 23 is decompressed, and dead bodies such as mites are sucked from the processing object S placed on the grill 25. Note that a handle 21 for transportation is provided on a side surface of the frame 21.
a and 21a are provided respectively.

Next, a procedure for exterminating ticks and the like using the above-described pest control device 1 and cleaning device 20 will be described. First, an object S such as a futon or a blanket is placed on the mounting shelf 2b, and the door 2a is closed. Then, the diffusion fan 3 and the turbo fan 5 are driven with the door 2a closed and sealed, and nitrogen gas is injected from the nitrogen cylinder 6 through the gas pipe outlet 7a serving as a non-oxygen gas supply port. The filling of the processing chamber 2 with nitrogen gas is completed in a few minutes. Incidentally, nitrogen gas is usually contained in the atmosphere at about 70%.
% Or more, the state becomes oxygen-deficient, and ticks and the like fall into difficulty breathing. Therefore, it is not always necessary to completely fill the inside of the processing chamber 2 with 100% nitrogen gas.

Next, a turbo fan 5 and a nitrogen cylinder 6
Is stopped, and the air is turned into hot air by the blower 4c and the heater 4d while the diffusion fan 3 is moved, and is circulated in the processing chamber 2. At this time, since the hot air naturally causes convection from the lower part to the upper part, in a configuration in which the heater unit 4b is provided at the lower part and the intake of the exhaust pipe 4a is provided at the upper part, natural convection is generated in addition to the forced by the heater unit 4b. In addition, more efficient hot air circulation becomes possible. It is said that it is necessary to set the air temperature to 50 ° C. or higher in order to kill mites and the like.
C. or higher, the surrounding temperature must be considerably increased. In this case, the air temperature at the outlet of the heater 4d is 9
It is desirable to apply power to the heater unit 4b so that the temperature becomes about 0 ° C.

When hot air circulation is performed for about 30 minutes in the above state, the elimination of mites and the like is almost completed. Then, the door 2a is slightly opened, the hot air is exhausted to the outside while the diffusion fan 3 and the turbo fan 5 are driven, and the object S is cooled to a degree that can be handled by hand.

Thereafter, in the case of the processing object S such as a futon or a blanket, the dead body of the tick is sucked by the cleaning device 20 described above. The turbo fan 24 is driven and the workpiece S is grilled 2
5 to suck dead bodies such as mites. In the pest control device 1, natural convection due to heat is performed from bottom to top, so that the mites move toward the upper side of the object S and die. Therefore, it is desirable from the viewpoint of efficiency that the upper surface of the processing object S is first sucked toward the grill 25 side.

Next, still another embodiment of the present invention will be described. In the above embodiment, nitrogen gas is used as the non-oxygen gas. However, as the non-oxygen gas, carbon dioxide gas or any other gas for reducing the oxygen concentration in the gas without affecting the human body can be used. Therefore, a gas having a low oxygen content can be used. The non-oxygen gas supply device is not limited to a gas cylinder, and may be, for example, a device that generates a non-oxygen gas by mixing a chemical.

In the above embodiment, the gas pipe outlet 7a
And the suction port 5a of the turbo fan 5 are provided at the respective portions of the processing chamber 2 on both sides of the mounting portion 2c of the object to be processed, the suction port 5a is provided at the upper part of the processing chamber 2, and the gas pipe outlet 7 is provided.
a was provided in the lower part of the processing chamber 2. However, when carbon dioxide gas having a specific gravity higher than that of air is used, the supply hole for carbon dioxide gas is arranged at the upper part of the chamber 2 and the suction port of the exhaust device in the processing chamber 2 is arranged at the lower part of the processing chamber 2. Is desirable. However, since the natural convection from the bottom to the top of the heated air can be used, and the direction of the convection by the diffusion fan 3 does not need to be switched, the first embodiment described above uses nitrogen as the non-oxygen gas. The arrangement of the suction port 5a and the gas pipe outlet 7a as described above is desirable from the viewpoint of efficiency.

The apparatus 1 for controlling pests and the like according to the present invention can control mites as well as pests, and can also remove fungi, fungi and some germs in addition to fleas and lice.

[0026]

As described above, according to the features of the insect pest control device and the method for controlling pests using the same according to the present invention, a pesticide treatment device and a roller for clamping the object to be processed are unnecessary. In addition, the structure and handling of the device are simplified, and the insecticidal work can be performed safely without using an insecticide. In addition, a relatively large amount of workpieces can be processed at once,
The insecticidal treatment can be performed efficiently and in a short time by the synergistic effect of the above-mentioned heating using the oxygenated gas.

It should be noted that the reference numerals entered in the claims are merely for convenience of comparison with the drawings, and the present invention is not limited to the configuration of the attached drawings by the entry. .

[Brief description of the drawings]

FIG. 1 is a plan view of a pest control device according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG. 2;

FIG. 4 is a rear view of the pest control device.

FIG. 5 is a perspective view showing a state where a door of the pest control device is opened.

FIG. 6 is a perspective view of a cleaning device.

FIG. 7 is a plan view of the cleaning device.

FIG. 8 is a sectional view taken along line CC of FIG. 7;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Exterminator etc. 2 Processing room 2a Door 2b Mounting shelf 2c Placement of a processed object 2d Circulation hole 2e Exhaust hole 3 Diffusion fan 4 Hot air circulation device 4a Exhaust pipe 4b Heater unit 4c Blower 4d Heater 5 Turbo fan ( Exhaust device) 5a Suction port 6 Nitrogen cylinder (non-oxygen gas supply device) 7 Gas pipe 7a Gas pipe outlet (non-oxygen gas supply port) 20 Cleaning device 21 Frame 21a Handle 22 Leg 23 Recess 23a Suction hole 24 Turbo fan (blower) 25 Grill S Workpiece

Claims (5)

[Claims] 1. A processing chamber (2) for storing an object to be processed (S) in a sealed state, a hot air circulation device (4) for circulating hot air in the processing chamber (2), and the processing chamber (2). An exhaust device (5) for exhausting the air inside to the outside, and a non-oxygen gas supply device (6) for supplying a non-oxygen gas containing no oxygen or having a low oxygen content into the processing chamber (2). Pest control equipment. 2. An exhaust pipe (4a) provided at an upper portion of the processing chamber (2), wherein the hot air circulating device (4) includes an exhaust pipe (4).
a) a blower (4c) for sucking the air in the processing chamber (2) from the a) and a heater (4) for heating the air sucked into the blower (4c) and supplying it to the lower part of the processing chamber (2).
The pest control device according to claim 1, wherein d) is provided. 3. A non-oxygen gas supply port (7a) from the non-oxygen gas supply device (6) and a suction port (5a) of the exhaust device (5) are connected to an object to be processed in the processing chamber (2). The pest control device according to claim 1, wherein the device is provided at portions opposite to each other across the mounting portion (2 c). 4. The pest control device according to claim 1, wherein the non-oxygen gas supply device (6) is a nitrogen cylinder for supplying nitrogen gas as non-oxygen gas. 5. A method for controlling pests and the like using the apparatus for controlling pests and the like according to claim 1, wherein the air in the processing chamber (2) is externalized by the exhaust device (5). After exhausting and supplying a non-oxygen gas into the processing chamber (2) by the non-oxygen gas supply device (6), hot air is circulated into the processing chamber by the hot air circulation device (4). Pest control method.