JP5735307B2 - High voltage application device - Google Patents

Description

  The present invention relates to a high voltage applying device suitable for applying a high voltage electrical stimulus for agriculture.

Traditionally, it was known that mushrooms would abnormally occur when lightning falls on the wood, but recently, when a high voltage electrical stimulus is applied to the wood just before germination, the development of mushrooms is promoted. It turns out that there is an effect to do.
Therefore, an attempt has been made to artificially give a high voltage electrical stimulus to the wood which is the raw wood.

JP-A 63-98322

Koichi Takagi and Satoshi Sugawara “Application of Pulsed Power Technology to Agriculture / Food Field” IEEJ Transactions Vol.129 No.7 2009 The Institute of Electrical Engineers of Japan p.439-445

By the way, in recent years, since it can be stably supplied throughout the year, fungus bed cultivation has been flourishing instead of raw wood cultivation. Put it in a container or bag and cultivate it in the greenhouse.
Thus, according to Non-Patent Document 1, an attempt is made to apply a high voltage of about 50 kV as a pulse, and as in the case of log cultivation, an attempt to give a pulse high voltage electrical stimulus in fungus bed cultivation as described above. Since the fungus bed is placed in an insulating material, the electric charge immediately saturates, and it is impossible to give the necessary electrical stimulation.

  The present invention has been made by paying attention to the above-mentioned conventional problems, and is intended to provide a high-voltage applying device that can cope with fungus bed cultivation and can give as much electrical stimulation as necessary. To do.

The present invention has been made to solve the above-mentioned problems, and the invention of claim 1 is directed to a high voltage generating unit, a high voltage controller for controlling the high voltage generating unit, and an output terminal of the high voltage generating unit. A high voltage application device having a high voltage pulse application unit connected to the positive voltage high voltage generation device and a negative high voltage generation device connected in parallel to the high voltage generation unit, Corresponding to each of the positive high voltage generator and the negative high voltage generator, a positive high voltage pulse application unit and a negative high voltage pulse application unit are provided, and each high voltage pulse application unit Is connected to the discharge-side electrode to which the output terminal of the corresponding high-voltage generation unit is connected, the ground-side electrode facing the discharge-side electrode through the discharge gap, and is connected to the ground-side electrode and applied to the application target. And a protective cylinder. To the high majority of the voltage pulse applying unit is accommodated, only the applied side electrode and is exposed, the high voltage controller-option the high voltage generator of the positive electrode, into a high-voltage generator of the negative electrode A high voltage applying device characterized by sending a control signal.

According to a second aspect of the present invention, in the high voltage applying device according to the first aspect , the high voltage pulse applying unit on the positive electrode side and the high voltage pulse applying unit on the negative electrode side are short-circuited. The high voltage applying device.

According to a third aspect of the present invention, in the high voltage applying device according to the first or second aspect , the high voltage controller includes a programmable control means.

A fourth aspect of the present invention, in the high voltage application device as claimed in any one of claims 1 to 3, comprising a hand piece, a high voltage pulse applying unit, and being provided integrally with the hand-held unit The high voltage applying device.

  According to the high voltage application device of the present invention, it is possible to cope with fungus bed cultivation, and it is possible to give as much electrical stimulation as necessary.

1 is an overall configuration diagram of a high voltage application device according to a first embodiment of the present invention. It is an electrical wiring diagram of the high voltage application apparatus of FIG. FIG. 3 is a detailed electrical wiring diagram of the high voltage generator of FIG. 2. It is explanatory drawing of the usage method of the high voltage application apparatus of FIG. It is a figure of the application pattern of the high voltage application apparatus of FIG. It is an electrical wiring diagram of the high voltage application apparatus which concerns on the 2nd Embodiment of this invention. It is explanatory drawing of the usage method of the high voltage application apparatus of FIG.

A high voltage application device 1 according to a first embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the high voltage applying device 1 mainly includes a high voltage generating unit 3, a high voltage controller 33, and a high voltage pulse applying unit 41. A voltage controller 33 is stored. A hand-held portion 43 is integrally attached to the high voltage pulse applying portion 41 so that a manual applying operation is possible.
As shown in FIG. 2, the high voltage generating unit 3 is connected to the high voltage controller 33 via the low voltage cable X and is connected to the high voltage pulse applying unit 41 via the high voltage cable Y.

  As shown in FIG. 1, the high voltage generation unit 3 is configured by an installation type housing 5, and the inside is a housing space. In the internal space, a positive high voltage generator 7 for charging in the positive direction of the unitized unit, a negative high voltage generator 7 ′ for charging the object (O) in the negative direction, and an adjustment capacitor 8. Are accommodated in such a way that they can be inserted and removed freely.

  FIG. 3 shows a high voltage generator 7 having a positive electrode, and a metal connector 10 having a plurality of terminals 9 (9a to 9g) is provided on the input side. A step-up transformer 11 is arranged on the right side, and a cockcroft Walton circuit 13 is arranged on the right side of the step-up transformer 11. The Cockcroft Walton circuit 13 includes a plurality of capacitors 15 and a plurality of diodes 17. An output resistor 19 is disposed on the right side of the Cockcroft Walton circuit 13, and an output terminal 21 is disposed on the right side of the output resistor 19. Under the step-up transformer 11 and the Cockcroft Walton circuit 13, bleeder resistors 23 and 25 and a protective resistor 27 are arranged. Reference numeral 29 denotes a temperature sensor, and the temperature sensor 29 is disposed in the vicinity of the step-up transformer 11.

The primary coil of the step-up transformer 11 is connected to the high voltage controller 33 via terminals 9a, 9b, 9c. The secondary coil of the step-up transformer 11 is connected to the Cockcroft Walton circuit 13. One end of the output resistor 19 is connected to the high voltage side (right side in FIG. 2) of the Cockcroft Walton circuit 13, and the other end of the output resistor 19 is connected to the output end 21.
One end of a bleeder resistor 23 is connected to the high voltage side of the Cockcroft Walton circuit 13, and one end of a bleeder resistor 25 is connected to the other end of the bleeder resistor 23. The other end of the bleeder resistor 25 is connected to the high voltage controller 33 via a terminal 9 f and is grounded in the high voltage controller 33.

A connection point between the bleeder resistor 23 and the bleeder resistor 25 is connected to the high voltage controller 33 through a terminal 9e.
One end of the secondary coil of the step-up transformer 11 is connected to the high voltage controller 33 via a terminal 9d. One end of the protective resistor 27 is connected to the terminal 9d, and the other end is connected to the terminal 9f.
One end of the temperature sensor 29 is connected to the high voltage controller 33 via the terminal 9g, and the other end is grounded in the high voltage controller 33 via the metal connector 10.

The negative high voltage generator 7 ′ has the same configuration as the positive high voltage generator 7 except that the direction of the diode 17 is reversed.
The output resistors 19 and 19 of the positive high-voltage generator 7 and the negative high-voltage generator 7 ′ are interposed between the output terminals 21 and the connection points 22 to the opposite electrode side. The backflow of is relaxed.

In addition to the CPU 35, the high voltage controller 33 includes a memory 37 in which a program defining a method for applying a high voltage pulse, that is, voltage, time, and application timing, and a transistor 39 inserted in a power supply line of a DC power supply. Is provided.
The high-voltage controller 33 has a function as a control means, and monitors the input voltage / current value, the output voltage / current value, and the temperature abnormality by controlling / monitoring according to the program of the above-described constituent elements. Enables stable generation of high voltage. The program is not fixed and can be rewritten on board.
According to the high voltage applying device 1, the high voltage controller 33 alternately sends control signals to the positive high voltage generating device 7 and the negative high voltage generating device 7 ′ to selectively switch the respective devices. Can work.

As shown in FIG. 2, the high voltage pulse applying unit 41 has a long bar shape, and a hand holding unit 43, a protective cover 45, and a discharge gap cover 47 that function as a protective cylinder are connected from the left side. All together.
The hand-held portion 43 is made of a conductive material, such as a metal material, and is connected to a ground wire 44. The protective cover 45 is made of an insulator, for example, PVC, PE, PP, POM, PETP, PFA, PTFE, or the like. The discharge gap cover 47 is transparent or semi-transparent, and is composed of the above-described insulator or a semi-conductor having a resistance value of about 10 ⁶ to 10 ¹⁰ Ω, for example, PVC, PETP, PMMA, PC, or the like.

The high-voltage cable Y extends to the discharge gap cover 47 side, and a spherical discharge-side electrode 49 is bare on the tip side.
A spherical ground side electrode 51 is opposed to the discharge side electrode 49 through a discharge gap. An application-side electrode 55 is bare on the opposite side of the ground-side electrode 51 across the rod-shaped connecting portion 53.
Therefore, even when working outdoors, a high voltage pulse can be output stably and stably regardless of the surrounding environment.

The high voltage application device 1 has the above-described configuration, and as shown in FIG. 4, the application-side electrode 55 is brought into contact with the fungus bed to give electrical stimulation.
Since the fungus bed is housed in an insulating container or the like, when an electrical stimulus is applied, the electric charge stays without escaping.

Various patterns can be considered for applying the high voltage pulse as shown in FIG.
Example 1 is an example in which a positive voltage high voltage generator 7 and a negative voltage high voltage generator 7 ′ are alternately operated to the same value to generate a pulse voltage. Since the charging direction is alternately changed from the positive electrode side to the negative electrode side or vice versa, only one of the positive high voltage generator 7 and the negative high voltage generator 7 'is operated. It is possible to give an electrical stimulus that is twice as strong as that of the case.
Example 2 is an example in which the positive high-voltage generator 7 and the negative high-voltage generator 7 ′ are operated after being operated a plurality of times and then switched. If the necessary electrical stimulation is relatively weak, the electrical stimulation may be reversed after being applied multiple times on the same polarity side in this way. From Example 1, the electrical stimulation is weakened, but the risk of backflow between the positive high voltage generator 7 and the negative high voltage generator 7 ′ is significantly reduced.
Example 3 is an example in which the value on the positive electrode side is higher than the value on the negative electrode side.

The degree of electrical stimulation and charge saturation required for the fungus bed differ depending on the type, shape, size, humidity, etc. Therefore, in consideration of the above, the application pattern of the high voltage pulse is determined and programmed.
Although Example 1 is a standard pattern, the pattern of Example 3 is preferable when the negative electrode side is more easily saturated, and the reverse pattern of Example 3 is preferable when the positive electrode side is more easily saturated.

A high voltage application device 61 according to a second embodiment of the present invention will be described with reference to FIG.
The high voltage application device 61 includes the same components as the high voltage application device 1 according to the first embodiment, and the same components are denoted by the same reference numerals and detailed description thereof is omitted.
In the high voltage applying device 61, a positive high voltage pulse applying unit 41 is connected to the positive high voltage generating device 7, and a negative high voltage pulse applying unit 41 ′ is connected to the negative high voltage generating device 7 ′. Is connected. The high-voltage pulse application unit 41 ′ on the negative electrode side has the same configuration as the high-voltage pulse application unit 41 on the positive electrode side.

Neither the positive electrode side nor the negative electrode side is provided with the high voltage generators 7 and 7 'corresponding to the output resistor 19 which is a backflow relaxation resistor.
Instead, the connection part 53 of the high-voltage pulse application unit 41 on the positive electrode side and the connection part 53 of the high-voltage pulse application unit 41 ′ on the negative electrode side are short-circuited by the short-circuit part 63. The backflow to the counter electrode is prevented by utilizing the gap between the ground electrode 51 and the ground side electrode 51.
The gap length can be adjusted, and backflow can be stably prevented by changing it according to the magnitude of the voltage. However, if an electric charge higher than the charge saturation point is applied to the object to be applied (O), a reverse flow to the counter electrode occurs. Therefore, when applying electrical stimulation, the applied level is charged to the object to be applied (O). It is preferable to keep it below the point. For the same reason, it is preferable that the applied levels on the positive electrode side and the negative electrode side are made substantially the same and the gap lengths are made substantially the same.

  When this high voltage application device 61 is used, as shown in FIG. 7, electric charges are supplied from the application side electrode 55 at the tip of the driven high voltage pulse application unit 41 (or 41 ′) toward the fungus bed. At the same time, the remaining charge travels to the connecting portion 53 of the high-voltage pulse applying unit 41 ′ (or 41) on the other driven side via the short-circuit portion 63 and stays there, preventing backflow. .

The embodiment of the present invention has been described in detail above. However, the specific configuration is not limited to this embodiment, and the present invention can be changed even if there is a design change without departing from the gist of the present invention. included.
For example, in the above embodiment, the Cockcroft Walton circuit 13 is used as the high voltage generation circuit. This is because it is small in size and can be obtained relatively easily and inexpensively. However, the present invention is not limited to this, and an electrostatic generator, a Wimshurst generator, a van de Graaff generator, a piezoelectric transformer high voltage generator, or the like may be used.

  The high voltage application device of the present invention uses a positive high voltage generation circuit and a negative high voltage generation circuit in combination, so that even if the device is miniaturized using the Cockcroft-Walton circuit, it has an electrical strength of a required level. Can be stimulated and easy to handle.

1. High voltage application device (first embodiment)
DESCRIPTION OF SYMBOLS 3 ... High voltage generation part 5 ... Installation type housing 7 ... Positive electrode high voltage generator 7 '... Negative electrode high voltage generator 8 ... Adjustment capacitor 9 ... Input side terminal 10 ... Metal connector 11 ... Step-up transformer 13 ... Cockcroft Walton circuit 15 ... capacitor 17 ... diode 19 ... output resistor 21 ... output end 22 ... connection point 23, 25 ... bleeder resistor 27 ... protective resistor 29 ... temperature sensor 33 ... high voltage controller 35 ... CPU
37 ... Memory 39 ... Transistor 41 ... High voltage pulse application unit 43 ... Hand-held unit 44 ... Ground wire 45 ... Protective cover 47 ... Discharge gap cover 49 ... Discharge side electrode 51 ... Ground side electrode 53 ... Connection unit 55 ... Application side electrode 61 ... High voltage application device (second embodiment)
41 '... High voltage pulse application unit 63 ... Short-circuit unit X ... Low voltage cable Y ... High voltage cable O ... Subject

Claims (4)

A high voltage application device having a high voltage generation unit, a high voltage controller for controlling the high voltage generation unit, and a high voltage pulse application unit to which an output terminal of the high voltage generation unit is connected,
The high voltage generator is connected in parallel with a positive high voltage generator and a negative high voltage generator,
Corresponding to each of the positive high voltage generator and the negative high voltage generator, a positive high voltage pulse application unit and a negative high voltage pulse application unit are provided,
Each high voltage pulse application unit is electrically connected to a discharge side electrode to which an output terminal of a corresponding high voltage generation unit is connected, a ground side electrode facing the discharge side electrode via a discharge gap, and the ground side electrode. An application-side electrode to be applied to an object to be applied, and most of the high-voltage pulse application unit is accommodated in a protective cylinder, and only the application-side electrode is exposed,
The high voltage controller alternatively sends a control signal to the positive high voltage generator and the negative high voltage generator. In the high voltage application device according to claim 1,
The high-voltage applying device, wherein the high-voltage pulse applying unit on the positive electrode side and the high-voltage pulse applying unit on the negative electrode side are short-circuited . The high voltage applying device according to claim 1 or 2,
The high voltage controller comprises a programmable control means . In the high voltage application apparatus in any one of Claim 1 to 3 ,
Comprising a hand piece, a high voltage pulse applying unit, a high voltage application device, characterized in that provided integrally with the hand-held unit.

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