JP4301107B2 - Pharmaceutical diffusion device - Google Patents

Description

The present invention, a drug such as insect sex pheromone, such as communication disrupting agent or attractant pest, to a dissipation device efficiently atomized by dissipating possible drug agents.

  In farms, instead of using pesticides, pest control methods that reduce the occurrence of pests by releasing attractants such as insect pheromones in the air, causing disruption of communication by causing pests to disrupt communication and reducing the number of eggs laid. It has been known. For example, it is known that a large number of insect pheromone dispensers are installed at predetermined intervals in a farm facility to naturally dissipate insect pheromones. Insect pheromone dispensers are known in which sex pheromones are enclosed in plastic tubes, which are hung on the branches of growing plants or the framework of greenhouses, and the sex pheromones are naturally placed in the air through the tubes. It is made to dissipate (patent document 1). However, in this dispenser, insect pheromones are continuously released even during the day when insects do not mate, and the amount of radiation is higher during daytime when the temperature is high, so there is a lot of wasteful release of the drug. Further, sex pheromones having a double bond are liable to cause ultraviolet deterioration and oxidation, so that it is necessary to add a stabilizer, which increases the cost. Furthermore, when there are pests that are not expected due to the effects of nearby orchards, it is impossible to immediately respond to such unexpected pests.

Therefore, use of a drug diffusion device that forcibly releases a volatile drug by a heater or a fan (Patent Documents 2, 3, and 4), and a spray-type drug diffusion device by remote control (Patent Document) 5) Or, it is possible to disperse the medicine using a droplet discharge head similar to the ink jet head used in the ink jet printer (Patent Document 6).
JP-A-8-322447 Japanese Utility Model Publication No.58-110288 Utility Model Registration No. 30211119 JP-A-9-74969 US Pat. No. 6,182,904 US Pat. No. 6,339,897

  Such a forced or on-demand drug diffusion device is generally attached to a support column set up in a field facility or the like, and in accordance with a required time zone, the drug is distributed on a drug diffusion member such as an evaporating dish or mesh material. The drug is released to the outside by dripping or discharging onto the surface.

  However, the amount of drugs such as insect pheromones that can be released is extremely small, and the diffusibility and developability are poor. For this reason, a very small amount of drug droplets dropped or discharged onto the surface of the evaporating dish or mesh-like material volatilizes and diffuses in the air in the state of being dropped or discharged on those surfaces. Since the contact area with air is small if it is in the form of dots, the radiation efficiency is extremely poor. In addition, when the wind is strong, the medicine dropped on the surface of the evaporating dish or mesh material may be blown off by the wind and fall on the ground as it is. In this case, the medicine cannot be diffused over the entire spray area.

In view of these points, an object of the present invention is to propose a device for diffusing a drug such as an insect pheromone that can quickly atomize an insect pheromone drug and efficiently diffuse it to a target region. .

In order to solve the above problems, dissipating device medicine agent of the present invention, a drug reservoir for storing the drug agent, and an electrode portion for dissipating electrostatically atomizing the drug, high in the electrode portion A driving unit that applies a voltage; and a drug supply unit that supplies the drug in the drug tank to the electrode unit, and the electrode unit again removes the drug adhered to the electrode unit without being electrostatically sprayed. It is characterized by having a medicine recovery part for recovery for electrostatic atomization .

  In the present invention, an electric field is applied to the drug supplied from the drug supply unit by applying a high voltage to the electrode unit, and free electric charges formed on the surface of the drug particles or electrostatic force generated by the polarization action of the drug particles Forms a spray of drug. Therefore, the medicine can be efficiently atomized and diffused to the target area.

  Here, the medicine storage section may include a medicine cartridge in which the medicine is stored in an airtight state, and a cartridge mounting section in which the medicine cartridge is mounted in a detachable state. By using the cartridge type, the medicine replenishment work for the diffusion device installed on the farm or the like is simplified. Further, since the drug cartridge is airtight, it is suitable as a drug reservoir for insect pheromones that are easily oxidized.

  It is desirable that the electrode unit includes a drug recovery unit that recovers the drug adhering to the electrode unit without being electrostatically sprayed for electrostatic atomization again. The drug with large particles released from the electrode part adheres to the inner peripheral surface of the electrode part without being sprayed into the atmosphere. By recovering such a medicine and atomizing it again, waste of the medicine can be suppressed.

The drive unit includes a timer, at predefined et time zone in the timer, be dissipated by electrostatically atomizing the medicament by applying a high voltage to the electrode unit desirable. For example, by previously incorporating a timer function, it is possible without resorting to manually dissipate pharmacist.

  The drug supply unit may supply the drug from the drug storage unit to the electrode unit by capillary force. The mechanism can be simplified and miniaturized as compared with the case where the drug is supplied from the drug reservoir to the electrode using a pump or the like. Moreover, since it can avoid that a chemical | medical agent contacts air, there exists an advantage that deterioration of a chemical | medical agent can be prevented.

  Here, in order to reliably perform electrostatic spraying of the medicine, it is desirable to include a conductive component for charging in the medicine.

Next, a medicine storage section for storing medicine, an electrode section for electrostatically atomizing and diffusing the medicine, a drive section for applying a high voltage to the electrode section, and a medicine in the medicine tank as the electrode A medicine supply part that supplies the electrode part , and the electrode part is a cylindrical electrode that is arranged coaxially at a needle-like electrode to which a negative high voltage is applied and a front side position in the axial direction of the needle-like electrode. The counter electrode and a drug recovery groove for guiding the drug attached to the circular inner peripheral surface of the counter electrode to the distal end portion of the needle electrode by capillary force can be provided.

  The drug supply unit includes a drug supply needle portion formed at the rear end of the needle electrode, and a drug supply hole that extends through the needle electrode and the drug supply needle in the axial direction. The supply hole may be configured to include a rear end opening exposed at the distal end surface of the medicine supply needle and a front end opening exposed at the distal end surface of the needle electrode. In this case, the drug supply needle can be inserted into the drug reservoir, and the drug in the drug reservoir can be supplied to the distal end surface of the needle electrode through the drug supply hole by capillary force.

Furthermore, in this case, the medicine storage section includes a medicine cartridge in which the medicine is stored in an airtight state, and a cartridge mounting portion in which the medicine cartridge is mounted in a detachable state. When the medicine cartridge is attached to the cartridge mounting portion, the medicine supply needle is in an airtight state at the medicine outlet of the medicine cartridge. What is necessary is just to make it the state inserted in.
Further, the above-mentioned drug contains an insect pheromone.

  In the insect pheromone drug diffusion device of the present invention, the insect pheromone drug having a low saturated water vapor pressure and difficult to evaporate is electrostatically atomized and diffused into the atmosphere. Therefore, it is possible to disperse the insect pheromone drug to the target region extremely efficiently compared to the conventional case.

  Hereinafter, an example of an insect pheromone drug diffusion apparatus to which the present invention is applied will be described with reference to the drawings.

(overall structure)
FIG. 1 is an external perspective view of the dissipating apparatus of this example as seen from the front side, and FIG. 2 is a longitudinal sectional view thereof. FIG. 3 is an exploded view showing the diffuser in a halved state. Referring to these drawings, the diffusion device 1 includes a cylindrical main body case 2, and the rear end opening 2 a of the main body case 2 is detachably attached thereto by a circular lid plate 3. Then, the inside of the main body case 2 serves as a cartridge mounting portion 5 for mounting the medicine cartridge 4. The front end of the main body case 2 is sealed with a circular front plate 6, and a circular projecting portion 7 is formed in the central portion of the front plate 6 so as to project forward in a coaxial state. An electrode portion 8 is coaxially attached to the circular tip surface 7 a of the circular protrusion 7, and the drive of the electrode portion 8 is controlled by the drive portion 9.

  The drug cartridge 4 is formed, for example, at the center of a stretchable bag portion 4a storing an insect pheromone drug formed of a flexible film laminated with an aluminum vapor deposition film, and the front end surface of the bag portion 4a. And a medicine outlet 4b. The medicine take-out port 4b is formed of a cylindrical rigid member, and the rubber packing 10 is inserted in an airtight state in the inside thereof to seal the drug take-out port 4b.

  The electrode portion 8 includes a needle-like electrode 12 protruding forward from the center of the conductive disk 11 and a cylindrical counter electrode 13 disposed coaxially at a front position of the needle-like electrode 12. Yes. The counter electrode 13 includes a rear cylindrical portion 13a and a small-diameter front cylindrical portion 13b that is constricted in a tapered shape from the tip of the rear cylindrical portion 13a and is integrally formed in a coaxial state. The rear cylindrical portion 13a is coaxially attached to the front end surface 11a of the needle-like disk 11 via an annular insulating spacer 14 having the same diameter.

  From the rear end of the needle electrode 12, that is, the rear end surface of the disk 11, the medicine supply needle 15 projects rearward in a coaxial state with the needle electrode 12. The needle-like electrode 12 and the medicine supply needle 15 are formed with a plurality of thin medicine supply holes 16 penetrating them in the direction of the axis 1a.

  4 is a partially enlarged sectional view showing the electrode portion 8 and the medicine outlet 4b of the medicine cartridge 4, and FIG. 5 is a partially enlarged perspective view showing the surface portion of the needle electrode 12. As shown in FIG. Referring to these figures as well, a plurality of drug supply holes 16 are formed concentrically around the device axis 1a at predetermined angular intervals. The front end side openings 16 a are exposed on the conical front end surface 12 a of the needle electrode 12, and the rear end side openings 16 b are exposed on the conical front end surface 15 a of the medicine supply needle 15. A central through hole 7b is formed in the distal end surface 7a of the circular projecting portion 7 of the main body case 2. The electrode portion 7 is coaxially attached to the distal end surface 7a and protrudes from its rear end. 16 extends through the center through-hole 7b and into the body case 2.

  In contrast, in the medicine cartridge 4 attached to the cartridge attachment portion 5 of the main body case 2, the tip portion of the medicine outlet 4b is inserted into the central through hole 7b from the inside. When the medicine take-out port 4b is inserted, the medicine supply needle 16 inserted in the coaxial state from the outside pushes the center hole 10a of the rubber packing 10 and penetrates there to be inserted into the medicine take-out port 4b in the coaxial state. It is. As a result, the medicine in the medicine cartridge 4 can be supplied to the distal end surface 12 a of the needle electrode 12 through the medicine supply hole 16. In this example, the inner diameter of the drug supply hole is set so that the drug is supplied to the distal end surface of the needle electrode 12 through each drug supply hole 16 by capillary force.

  Here, as can be seen from FIG. 5, the circular groove 11 b having a diameter smaller than the inner diameter of the insulating spacer 14 on the surface of the disk 11 of the needle electrode 12, and the distal end surface along the outer peripheral surface of the needle electrode 12 A plurality of drug recovery grooves 11c extending from the top of 12a to the circular groove 11b are formed. As will be described later, the drug that adheres to the inner peripheral surface of the cylindrical counter electrode 13 and hangs down on the surface 11a of the disk 11 is sucked up by capillary force along the circular groove 11b and the drug recovery groove 11c. Thus, it is guided to the distal end surface 12 a of the needle electrode 12.

  Next, as shown in FIG. 2, the drive unit 9 applies a high voltage from the high voltage source 17 to the needle electrode 12 and controls the relative potential of the counter electrode 13 with respect to the needle electrode 12. A circuit 18 is provided. The drive unit 9 may be stored in the main body case 2 with a storage space, or may be stored in a case separate from the main body case 2. Further, as a drive power source, a battery may be mounted on the main body case 2.

(Drug release action)
With reference to FIG. 6, the medicine dispersion | distribution operation | movement of the dispersion apparatus 1 of this example is demonstrated. For example, the drive unit 9 applies a negative high voltage to the needle-like electrode 12 of the electrode unit 8 for a predetermined time at a predetermined time by a built-in timer function. Further, the counter electrode 13 is controlled to be in a predetermined potential difference state with respect to the needle electrode 12. When a high voltage is applied to the needle electrode 12 by the drive unit 9, a strong electric field is generated between the tip of the needle electrode 12 and the cylindrical counter electrode 13. A drug is supplied to the distal end surface 12a of the needle electrode 12 through a drug supply hole by capillary force. Therefore, the chemical | medical agent currently supplied here receives the effect | action of a strong electric field, is electrostatically atomized, is attracted | sucked to the counter electrode 13 side, and is sprayed outside through the front-end | tip opening part 13c.

  In addition, the liquid droplets of the drug that is insufficiently atomized, that is, the drug that has flown toward the counter electrode 13 without being sufficiently fine, are not sprayed to the outside, and are applied to the circular inner peripheral surface 13d of the counter electrode 13. It sticks as it is. The drug droplets adhering to the circular inner peripheral surface 13d hang down and accumulate on the surface 11a of the disk 11. On the surface 11a of the disk, there are formed drug recovery grooves 11b and 11c capable of sucking the drug to the tip surface 12a of the needle electrode 12 by capillary force. Therefore, the liquid droplets of the medicine that have not been sprayed to the outside are electrostatically atomized again without being wasted.

  Here, the bag portion 4a of the medicine cartridge 4 is formed of a sufficiently flexible material that can be reduced in accordance with the amount of medicine sucked up by the capillary force through the medicine supply hole 16. Therefore, the medicine is always supplied from the medicine cut ridge 4 to the distal end surface 12 a of the needle electrode 12.

  The drug supply hole 16 for sucking up the drug by capillary force may be a narrow hole having an inner diameter of 0.1 mm or less, for example. The chemical solution collecting groove 11c may be a narrow groove having a width and a depth of about 0.1 mm. Further, the potential difference between the needle electrode (discharge electrode) 12 and the counter electrode 13 may be set within a range of, for example, 1 KV to 5 KV, and the potential of the counter electrode is held at the ground potential, the float state, or the positive potential.

  In order to reliably form an electrostatic spray of an insect pheromone drug, for example, a non-conductive solvent such as ethanol, so that the drug has a resistivity of 10 −4 to 10 −12 Ω · cm, and What is necessary is just to mix and adjust conductive powders, such as carbon black, to a chemical | medical agent.

  As described above, according to the radiation device 1 of this example, the insect pheromone chemical solution having a low saturated vapor pressure is diffused into the atmosphere by electrostatic atomization. Therefore, the insect pheromone drug that is difficult to evaporate can be efficiently released.

  In addition, since less energy is required for electrostatic atomization, the operation time can be extended when a battery or the like is used as a drive source. Therefore, it is suitable for the case where it is installed in a plurality of locations in a discrete state on a farm.

  Furthermore, since the chemical | medical agent adhering to 13d of inner peripheral surfaces of the counter electrode 13 is collect | recovered and electrostatic atomization is carried out again, waste of a chemical | medical solution can be suppressed and the utilization efficiency of a chemical | medical solution can be improved.

  In addition, the medicine is supplied from the medicine cartridge 4 to the needle-like electrode 12 by capillary force. Therefore, since it is not necessary to use a mechanism such as a pump, the apparatus can be reduced in size and cost.

  Further, an insect pheromone drug whose medicinal effect is likely to deteriorate due to oxidation is put in a sealed drug cartridge 4, and from here, a necessary amount of drug is always supplied to the needle electrode tip surface 12a through the drug supply hole 16 by capillary force. is doing. Therefore, an insect pheromone drug with no change in medicinal effect can be released over a long period of time.

It is an external appearance perspective view at the time of seeing the diffusion apparatus to which this invention is applied from the front side. It is a longitudinal cross-sectional view of the diffusion apparatus of FIG. It is a disassembled perspective view which shows the diffusion apparatus of FIG. 1 in a half-split state. It is the elements on larger scale of the part of the electrode part of the diffusion apparatus of FIG. It is a partial expansion perspective view which shows the acicular electrode of the diffusion apparatus of FIG. It is explanatory drawing which shows the electrostatic spraying state of the diffusion apparatus of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Dissipation apparatus, 1a center axis line, 2 case, 3 lid | cover, 4 chemical | medical agent cartridge, 4a bag, 4b ink outlet, 5 cartridge mounting part, 6 front plate, 8 electrode part, 9 drive part, 10 rubber packing, 11 disc, 12 Needle-shaped electrode, 12a Tip surface, 13 Counter electrode, 13c Tip opening, 13d Inner circumferential surface, 14 Insulating spacer, 15 Ink supply needle, 16 Ink supply hole, 16a Tip opening, 16b Trailing end opening, 17 High pressure source, 18 Control circuit

Claims (9)

A drug reservoir for storing the drug agent,
An electrode for electrostatic atomization of the drug to dissipate;
A driving unit for applying a high voltage to the electrode unit;
A drug supply unit that supplies the drug in the drug tank to the electrode unit;
Have,
The electrode portion dissipating device drug agent characterized in that it comprises an agent recovery portion for recovering in order to again electrostatically atomizing the drug adhered to the electrode portion without being electrostatically sprayed. In claim 1,
The drug reservoir includes a medicament cartridge in which the drug was stored in an airtight state, dissipating device drug agent characterized in that the drug cartridge is a cartridge mounting portion that is mounted in a state capable of detachable . In claim 1,
The drive unit includes a timer, at predefined et time zone in the timer, the dissipation of drug agents by applying a high voltage to the electrode portions and wherein the dissipating electrostatically atomizing the drug apparatus. In claim 1,
The drug supply unit, dissipating device drug agent and supplying a drug to the electrode portion from the drug reservoir by capillary force. In claim 1,
Dissipating device of pharmacists, wherein the the drug contains conductive component for charging. A drug reservoir for storing the drug;
An electrode for electrostatic atomization of the drug to dissipate;
A driving unit for applying a high voltage to the electrode unit;
A drug supply unit that supplies the drug in the drug tank to the electrode unit, the electrode unit being a needle-like electrode to which a negative high voltage is applied, and a front side position of the needle-like electrode in the axial direction A cylindrical counter electrode arranged in a coaxial state and a drug recovery groove for guiding the drug adhering to the circular inner peripheral surface of the counter electrode to the tip of the needle electrode by capillary force dissipating device drug agent characterized. In claim 6 ,
The drug supply unit includes a drug supply needle portion formed at a rear end of the needle electrode, and a drug supply hole extending in the axial direction through the needle electrode and the drug supply needle,
The drug supply hole includes a rear end opening exposed on a tip surface of the drug supply needle, and a front end opening exposed on a tip surface of the needle electrode,
The drug supply needle is inserted into the drug reservoir,
Dissipating device drug agent characterized in that the drug in the drug reservoir is supplied to the tip surface of the needle electrode through the drug supply hole by the capillary force. In claim 7 ,
The medicine storage section includes a medicine cartridge in which the medicine is stored in an airtight state, and a cartridge mounting portion in which the medicine cartridge is attached in a detachable state, and the medicine cartridge is capable of inserting the medicine supply needle. It is equipped with a drug outlet that is tightly sealed
When mounting the medicament cartridge into the cartridge mounting portion, the drug outlet of the medicament cartridge, dissipating device of pharmacists, characterized in that state in which the drug supply needle is inserted in an airtight state is formed.   9. The drug diffusion device according to claim 1, wherein the drug contains an insect pheromone.

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