JP2560169Y2 - Electric shock insect - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION This invention is pest entering between grid-like electrodes to which a high voltage is applied, electric shock used to kill the pests by causing a large spark discharge peak current value Regarding insecticide .

[0002]

2. Description of the Related Art In the case of killing insects between grid electrodes by spark discharge, insects adhere to the electrodes with a discharge current having a small peak current value . Therefore, it was necessary to burn off the insects by peak current value is large discharge current. This pea
Electrodeposition in the conventional to flow a large discharge current leakage current value
Separate capacitors were used in the killer .

As shown in FIG. 3A, a conventional electric shock insecticide transformer has a low voltage winding (primary winding) 12 wound on a main iron core 11 and is separated from the low voltage winding 12 so as to be separated from the main iron core. A high-voltage winding (secondary winding) 13 is wound on the low-voltage winding 1.
2 and a high-voltage winding 13, a leakage core 14 is arranged. The main iron core 12 forms a closed magnetic circuit. AC power, for example, commercial AC power, is applied between both ends of the low-voltage winding 12, and 3
A high voltage of 0 kV is generated.

Conventionally, kraft paper used between the electrodes of a paper capacitor has been used between the winding layers of the high-voltage winding 13. Conventionally, as shown in FIG. 3B, a discharge current (pulse current) having a large capacitive peak value is generated between both ends of the high-voltage winding 13 of the electric shock insecticide transformer 15 shown in FIG. 3A. The capacitor 16 is maintained at both ends, and both ends of the capacitor 16 are maintained at the grid electrode 17.
The capacitance of the capacitor 16 is about 200 to 500 pF.

[0005]

Since a high voltage is applied to both ends of the capacitor 16, it is necessary to increase the insulation distance between the both ends, and a large space is required to accommodate the capacitor 16. Since the capacitor 16 is connected to the grid electrode 17, there is a possibility that rainwater may splash on the main body of the capacitor 16, and the insulation may be reduced due to insects adhering to the main body of the capacitor 16. there were. That is, a large space is required for the capacitor 16 and a sufficient insulating treatment is required.

[0006]

According to the present invention, a polymer film is used as an insulating paper between the windings of the high-voltage winding, and the magnitude of the distributed capacitance present in the high-voltage winding is determined by the insecticidal pulse. The supply of current is made possible.

[0007]

FIG. 3 shows a transformer for an electric shock insecticide according to the present invention.
A, the main iron core, low voltage winding,
A high voltage winding and a leakage core are provided, and a feature of the present invention is a high voltage winding. As shown in FIG. 1, the main core 11 is inserted through the bobbin 21 in the high-voltage winding,
An insulated copper wire 22 is aligned and wound on the bobbin 21,
An interlayer insulating paper 23 is interposed between the respective winding layers.

In the present invention, as the interlayer insulating paper 23, a polymer film having a large dielectric constant and a high withstand voltage, such as a polyester film and a polypropylene film, is used. The size distribution capacitance existing high voltage winding, is the degree capable of supplying the peak current value is large discharge current (pulse current). That is, the high voltage winding 1
2 is an equivalent circuit of the copper wire 22 as shown in FIG.
The series connection of the inductances L of the windings, the capacitance C _S between both ends of each inductance L and the transformer case (or iron core), and the capacitance C _W between one adjacent winding in parallel with each inductance L A distributed constant circuit exists for each winding layer, and a capacitance C _L between each winding layer exists in parallel with each one winding layer.

The total capacity of the distributed capacitors C _S , C _W , and C _L seen from both ends of the high voltage winding 13 is such that the pulse current at the time of the insecticidal operation can be supplied, for example, 200 to 500 pF
To be Polymer film has high pressure resistance, can be made thin, and since the dielectric constant is large, it is possible to increase the interlayer capacitance C _L. For this reason, when, for example, a polyester film is used as the interlayer insulating paper 23, it is possible to obtain about 5 to 10 times the capacitance as compared with the case where a capacitor paper is used as the interlayer insulating paper (conventional product). A corresponding capacitance could be obtained across the high voltage winding 13.

By using a high withstand voltage and high dielectric constant insulating coating for the copper wire 22, the capacitances C _W and C _L can be further increased.

[0011]

As described above, according to the present invention, a polymer film is used as an interlayer insulating paper for a high-voltage winding, and the distribution capacity of the high-voltage winding has a peak value at which insects can be burned off. Is large enough to supply a high pulsed discharge current. For this reason, there is no need to attach an independent capacitor, no space is required, no insulation treatment is required, and the electric shock insect killer can be made compact and inexpensive.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a high-voltage winding which is a main part of an embodiment of the present invention.

FIG. 2 is a diagram showing an electrical equivalent circuit of FIG.

FIG. 3A is a diagram showing a conventional electric shock insecticide transformer, and FIG. 3B is a diagram showing a conventional electric shock insecticide.

Claims (1)

(57) [Scope of request for utility model registration] 1. A main core, a low-voltage winding wound on the main core, a high-voltage winding wound on the main core, and a low-voltage winding disposed between the low-voltage winding and the high-voltage winding. and a leakage iron core
And a voltage transformer connected between both ends of the high-voltage winding.
And more than a predetermined size between the electrodes
Electric shock to kill insects by spark discharge current of pulse with peak
In the insecticide, a polymer film is used as the insulating paper between the windings of the high-voltage winding, and the size of the distributed capacitance existing in the high-voltage winding is 200 to
Electric shock insect killer characterized by being about 500 pF
Bowl .