RU2027363C1 - Device for control of crawling insects - Google Patents

Abstract

FIELD: insect pest control. SUBSTANCE: device has dielectric plat 1 with conducting strips 2 and 3. Strips 4 between these strips are made of some dielectric material. The width of the conducting strips and width of strips 4 are determined by the maximum and minimum distances between the front and rear legs of insects to be killed. Conducting strips 2 are connected to terminal 5. Conducting strips 3 are connected to terminal 6 of power source 7. Plate 1 is mounted in the casing at an angle so touches the casing only with its support line 14. A container for bait is mounted in the upper part of plate 1. The casing has holes to let insects crawl in, and it also has holes for removal of killed insects. As the insects want to reach the bait, they crawl into the casing and move on plate 1. They are killed as their front and rear legs touch strips 2 and 3 connected to terminals 5 and 6 of power source 7. The killed insects roll down on plate 1 out of the casing by gravity. EFFECT: higher reliability and efficiency in operation. 2 dwg

Description

 The invention relates to the field of control of harmful insects and may find application in the development of devices for the destruction of harmful insects such as cockroaches, ants, caterpillars, slugs, etc.

 A device for hitting flying insects with high-voltage current [1], consisting of an electric lamp, on the transparent armature of which a grid of conductive ink is printed by printing. High voltage is applied to adjacent grid elements. Insects, flying into the light, come into contact with the grid elements having different voltage polarity, and die.

 The disadvantage of this design is that crawling insects falling on such a grid can remain on it, which leads to large leakage currents and possible fire of insects, damage to the grid and the source of electricity.

 The closest technical solution, selected as a prototype, is a lamp for the defeat of flying parasitic insects, containing a housing, an electric lamp and a grid, the elements of which are under high voltage. Insects flying into the light of the lamp come into contact with the grid elements having different voltage polarity and die.

 The disadvantage of this design is that crawling insects moving to such a net, unlike flying insects that come in contact with the net with their entire surface, touch the mesh elements only with their forelimbs. In this case, the hind limbs are not necessarily located on elements under the opposite potential. This scares off insects and leads to the need to increase the voltage, since the passage of electric current through a part of the insect can lead to temporary shock and the resumption of its life over time. In addition, affected insects can remain on the grid, touching elements with different voltage polarity, which can lead to overload and failure of the source of electricity.

 The aim of the invention is to increase the operational reliability and performance of the device for the destruction of creeping harmful insects.

The goal is achieved by using insect bait to move along a plate on which there are alternating conductive strips separated by a dielectric, for example strips obtained by etching a foil textolite. The width of the conductive strips and the dielectric gap between them is selected based on the maximum L and minimum l dimensions between the front and rear extremities of the insects to be destroyed. For example, the length of cockroaches-Prusaks ranges from l = 3 mm to L = 15 mm. In this case, the width of the conductive zone (strip) should be 15 mm, and the width of the insulating zone (strip) should be 3 mm. This design ensures the passage of current throughout the crawling insect and leads to the maximum effect of destruction. So that the affected insects do not remain in the zone of stress, the plate with the indicated stripes is located at an angle to the horizontal. Reliable ssypanie infected insects occurs if the angle φ of inclination of the plate to the housing base is in the range ^of 45-75. This ensures sufficient contact of the extremities of insects with conductive stripes of the plate.

 The bait or attractant is placed in a container, fortified at the top of the plate.

 In order to increase the safety of operation of the device, a plate with a bait tank mounted on it is placed in a housing in which there are holes for insects to penetrate into it and remove them after damage. The plane is installed in the housing so that it is in contact with the housing only by the support line. As a result, insects can move to the bait only along the plate, where there are strips under voltage.

 Comparative analysis with the prototype shows that this device is characterized in that the width of the conductive strips and the dielectric strips is determined by the minimum and maximum distances between the front and rear extremities of the insects being destroyed, as well as the fact that the plate where these strips are located is located at an angle to the base and in contact with the housing line of support.

 Figure 1 shows a plate with strips conducting an electric current, and strips of a dielectric; figure 2 - installation of the plane in the housing of the device.

 A device for exterminating creeping insects comprises (Fig. 1) a plate 1 on which there are strips 2 and 3 made of electrically conductive material, and strips 4 made of insulating material between these strips. The conductive strip 2 is electrically connected and connected to terminal 5. The conductive strip 3 is electrically connected and connected to terminal 6. Terminals 5 and 6 are connected to voltage source 7. The plate 1 (Fig. 2) is installed in the housing 9 so that it is in contact with the housing 9 only by the support line 14. In the upper part of the plate 1, a container 10 is installed to accommodate the bait 13. In the housing 9 there are openings 11 for insects to enter inside it and holes 12 for removing infected insects.

 The device operates as follows.

 Insects 8, attracted by the bait 13, located in the bait vessel 10, penetrate through the holes 11 into the housing 9. Since the plate 1 is in contact with the housing 9 only by the support line 14, insects 8 can reach the bait located in the bait vessel 10, moving only on the plate 1. When moving to the container 10, insects 8 are in contact with the front and rear limbs with the conducting stripes 2 and 3 of plate 1. Since the conducting stripes 2 and 3 are oppositely charged (connected to different terminals 5, 6 of the voltage source), insects 8 die. Destroyed insects 8 slide down the plate 1 under the action of gravity and are removed from the device through holes 12.

 Experimental studies of a device for the destruction of crawling insects showed that, compared with a device for a similar purpose, this device provides more reliable destruction of insects due to their more complete electric shock and timely removal from the affected area, which increases its productivity.

Claims (1)

DEVICE FOR DESTROYING CRAWLING INSECTS, containing a protective case with a dielectric plate installed in it, on the upper surface of which parallel conductive strips are made, connected to the corresponding terminals of the power source and placed with a gap between each other, while an insect attracting unit is installed on the output section of the dielectric plate, and in the walls of the protective housing made inlet and outlet, characterized in that, in order to increase operational reliability and device, conductive strips are located on the entire surface of the dielectric plate and are made equal to the maximum distance between the front and rear extremities of the exterminated insect, and the gap width between adjacent conductive strips is chosen equal to the minimum distance between the front and rear extremities of the exterminated insect, with adjacent strips connected to opposite terminals of the power source, and the dielectric plate is installed at an angle of 45 - 75 ^o to the base of the housing and paired with the last for the outlet.

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