JP2012066217A - Electrostatic atomization device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electrostatic atomization device capable of favorably generating electrostatic fine particle water even when excessive dew condensation is generated.SOLUTION: In an atomizing electrode 13, a heat radiation member 15 as a drying tool for drying the excessive dew condensation water by using the heat of a heat radiating side end part 14b opposite to the heat absorbing side end part 14a of a thermoelectric element 14 on closer to the leading end side than a base part 13c. The heat radiation member 15 is configured so as to connect with the heat radiating side end part 14b of the thermoelectric element 14 on closer to the leading end side than the base part 13c.

Description

  The present invention relates to an electrostatic atomizer that generates charged fine particle water.

  For example, as described in Patent Document 1, the atomized electrode (discharge electrode in Patent Document 1) is cooled to generate condensed water on the surface of the electrode, and the condensed water retained on the atomized electrode is fogged. There is known an electrostatic atomizing apparatus that generates charged fine particle water having a weak acidity and electric charge by atomization with an atomizing electrode. Since this charged fine particle water contributes to moisture retention of skin and hair, deodorization of space and objects, and the like, various effects can be obtained by mounting the electrostatic atomizer on various products.

  Moreover, the electrostatic atomizer of patent document 1 connects an atomization electrode with the heat absorption side edge part of a thermoelectric element, and an atomization electrode is cooled by the thermoelectric element, and dew condensation water is produced | generated on the surface of the atomization electrode. It has become so. And in the state where the dew condensation water is supplied to the front end side of the atomization electrode, by applying a high voltage to the dew condensation water on the front end side, electrostatic atomization can be performed to generate charged fine particle water. Yes.

JP 2006000826 A

  By the way, in the electrostatic atomizer as described above, for example, when the thermoelectric element is driven under high humidity, excessive dew condensation water generated on the surface of the atomization electrode is generated. For this reason, for example, in order to suppress the occurrence of water in the device and corrosion due to this water, etc., if excessive dew condensation water is generated, temporarily stop energization of the thermoelectric element and remove the excessive dew condensation water. It needs to be dried. At this time, for example, when there is more excess dew condensation water to the unnecessary part than the dew condensation water on the tip side of the atomization electrode necessary for the generation of charged fine particle water, The condensed water would be dried first, and it was difficult to suitably generate charged fine particle water.

  The present invention has been made to solve the above problems, and an object of the present invention is to provide an electrostatic atomizer capable of suitably generating charged fine particle water even when excessive dew condensation occurs. .

  In order to solve the above-described problems, the electrostatic atomizer of the present invention is configured so that an atomizing electrode having a base portion having a diameter larger than that of the electrode main body portion is disposed on the base end side of the electrode main body portion. The condensed water is generated on the surface of the atomizing electrode by cooling at the section, and the charged fine particle water is generated by applying a voltage to the condensed water held in the discharge section on the tip side of the atomizing electrode. In the electroatomization device, the atomization electrode becomes excessive by using the heat of the heat radiation side end portion on the opposite side of the heat absorption side end portion of the thermoelectric element on the tip side of the base portion. And a drying means for drying the condensed water.

In the above configuration, the drying means is preferably configured to be connected to the heat radiation side end of the thermoelectric element on the tip side of the base portion.
Further, in the above configuration, the drying means includes a heat dissipating main body connected to the heat dissipating side end of the thermoelectric element on the opposite end side from the base, and the heat dissipating main body from the base to the front end. It is preferable to include a drying extension portion that extends and can move heat from the heat radiating main body portion.

  Further, in the above configuration, the thermoelectric element is connected to the atomizing electrode and heats the first condensed thermoelectric element for cooling the atomizing electrode and excess condensed water generated in the base portion of the atomizing electrode. The second thermoelectric element, and the drying means is connected to the heat radiating side end of the first thermoelectric element on the opposite side of the base part from the base part, and the tip side of the base part. It is preferable to include a heating member that is mainly heated from the surface of the heat radiating main body through the second thermoelectric element.

  ADVANTAGE OF THE INVENTION According to this invention, even if excessive dew condensation arises, the electrostatic atomizer which can generate electrostatic fine particle water suitably can be provided.

(A) (b) (c) is a schematic block diagram of the electrostatic atomizer in 1st Embodiment. It is a schematic block diagram of the electrostatic atomizer in 2nd Embodiment. It is a schematic block diagram of the electrostatic atomizer in 3rd Embodiment.

(First embodiment)
A first embodiment of the present invention will be described below with reference to the drawings.
Fig.1 (a)-(c) shows the schematic block diagram of an electrostatic atomizer. The electrostatic atomizer 10 according to the present embodiment includes a support frame 11 having a substantially cylindrical shape formed using an insulating resin material such as PBT resin, polycarbonate resin, PPS resin, or liquid crystal polymer. A ring-shaped counter electrode 12 provided with a through hole at the approximate center of the flat plate member is provided on the front end surface (upper end surface in FIG. 1) of the support frame 11. The counter electrode 12 is composed of a metal material such as stainless steel, copper, platinum, or the like, or a conductive resin material, or a material obtained by patterning a conductive material on the surface of the resin material. The opening at the center of the counter electrode 12 is a mist discharge port 12a. The counter electrode 12 is connected to a high voltage power supply circuit C for applying a high voltage.

  Inside the support frame 11, a conductive metal atomizing electrode 13 is arranged. The atomizing electrode 13 has a substantially cylindrical electrode main body 13 a extending along the axial direction of the substantially cylindrical support frame 11. A substantially spherical discharge portion 13b is provided on the distal end side of the electrode main body portion 13a, and a substantially annular base portion 13c extending radially outward is provided on the proximal end side of the electrode main body portion 13a. . In addition, the atomization electrode 13 can be comprised with metal materials, such as brass, aluminum, copper, tungsten, and titanium, resin, carbon, etc. which have electroconductivity.

  Further, a heat absorption side end portion 14a of a thermoelectric element 14 composed of P-type and N-type thermoelectric elements is connected to the surface side (upper surface in FIG. 1) which is the tip side of the base portion 13c of the atomizing electrode 13. . The thermoelectric element 14 is composed of a thermoelectric element (thermoelectric material) having a large Seebeck coefficient such as BiTe, PbTe, or SiC. The atomizing electrode 13 and the thermoelectric element 14 can be connected by using solder bonding or a conductive adhesive. Incidentally, when the atomizing electrode 13 and the thermoelectric element 14 are joined by soldering, nickel plating may be applied to the surface of the base portion 13c of the atomizing electrode 13 in order to satisfactorily perform this.

  Further, the heat dissipation side end 14b of the thermoelectric element 14 is arranged in a mode that is on the tip side with respect to the heat absorption side end 14a, and a heat dissipation member 15 as a metal member is connected to each end 14b. Has been. The heat dissipating member 15 is preferably made of a metal material such as brass, aluminum, or copper that has excellent electrical and thermal conductivity. A current supply unit 17 is connected to each heat dissipation member 15 via a lead wire 16. With such a configuration, an energization circuit that can supply the current from the current supply unit 17 to the thermoelectric element 14 via each lead wire 16 and the heat dissipation member 15 is formed. At this time, the current supply unit 17 can supply current from the heat dissipation side end 14b side to the heat absorption side end 14a side of the thermoelectric element 14. Thus, heat can be transferred from the heat absorption side end portion 14a of the thermoelectric element 14 to the heat radiation side end portion 14b.

  In the electrostatic atomizer 10 configured as described above, the heat absorption side end portion 14 a of the thermoelectric element 14 is cooled by supplying current to the thermoelectric element 14 via the current supply unit 17. And the atomization electrode 13 is cooled by being cooled in this way, the water | moisture content in air condenses, and water (condensation water) is supplied to the atomization electrode.

  Further, for example, as shown in FIG. 1C, when excessive dew condensation water is generated on the front end side of the base portion 13c, the heat dissipation side end portion of the thermoelectric element 14 is disposed on the front end side of the base portion 13c. The excess condensed water W1 can be dried by the heat of the heat radiating member 15 connected to 14b. Further, for example, when the electrostatic atomizer 10 is arranged so that the spherical discharge portion 13b is directed upward in the vertical direction, when the excessive dew condensation water W1 starts to accumulate, the atomization electrode 13, the heat dissipation member 15, and the thermoelectric element 14 are dew condensation. It is connected by water, and the overcooling of the atomizing electrode 13 can be prevented.

Next, characteristic effects of the present embodiment will be described.
(1) Condensed water that has become excessive by utilizing the heat of the heat radiation side end 14b opposite to the heat absorption side end 14a of the thermoelectric element 14 on the tip side of the base 13c in the atomization electrode 13 A heat radiating member 15 is provided as a drying means for drying. The heat radiating member 15 is configured to be connected to the heat radiating side end portion 14b of the thermoelectric element 14 on the tip side from the base portion 13c. By adopting such a configuration, when excessive dew condensation water is generated on the tip side of the base part 13c, it is disposed on the tip side of the base part 13c and connected to the heat radiation side end part 14b of the thermoelectric element 14. The excessive dew condensation water W1 can be dried by the heat of the heat radiating member 15 to be discharged. For this reason, charged fine particle water can be suitably generated even if excessive dew condensation water W1 is generated due to excessive dew condensation.

(Second Embodiment)
Hereinafter, a second embodiment of the present invention will be described with reference to FIG. In addition, about the same member as 1st Embodiment, the same code | symbol is attached | subjected and all or one part of drawing and description is omitted.

  In the electrostatic atomizer 10 of this embodiment, the heat absorption side end 20a of the thermoelectric element 20 is connected to the back surface (the lower surface in FIG. 2) of the base portion 13c of the atomization electrode 13. The heat dissipation side end 20b, which is the end opposite to the heat absorption side end 20a of the thermoelectric element 20, is connected to the heat dissipation member 15 as the heat dissipation main body. The heat dissipating member 15 is provided with a drying extending portion 15a extending from the surface to the front end side of the base portion 13c of the atomizing electrode 13 on the surface (upper surface in FIG. 2). The extending portion 15a for drying is bent in a substantially L shape at the tip end, and is brought close to the atomizing electrode 13 until the tip end faces the base portion 13c.

Next, characteristic effects of the present embodiment will be described.
(1) The heat dissipating member 15 connected to the heat dissipating side end 20b of the thermoelectric element 14 on the opposite end side from the base part 13c, and extending from the heat dissipating member 15 to the front end side of the base part 13c and dissipating heat. A drying extension 15a capable of transferring heat from the member 15. With such a configuration, heat is transmitted from the heat radiating member 15 heated by the heat radiation of the thermoelectric element 14 to the drying extension 15a, and the excessive dew condensation water is dried at the drying extension 15a. It becomes possible.

(Third embodiment)
Hereinafter, a third embodiment of the present invention will be described with reference to FIG. In addition, the same code | symbol is attached | subjected about the same member as 1st Embodiment or 2nd Embodiment, and all or one part of drawing and description is omitted.

  In the electrostatic atomizer 10 of the present embodiment, the heat absorption of the P-type thermoelectric element 30 and the N-type thermoelectric element 31 as the first thermoelectric elements on the back surface (the lower surface in FIG. 2) of the base portion 13 c of the atomizing electrode 13. The side end portions 30a and 31a are connected. And the thermal radiation member 15 as a thermal radiation main-body part of a drying means is connected to the thermal radiation side edge part 30b, 31b of each thermoelectric element 30,31, respectively. The heat dissipation members 15 are connected to heat absorption side end portions 32a and 33a of thermoelectric elements 32 and 33 as second thermoelectric elements having different polarities from the thermoelectric elements 30 and 31, respectively. More specifically, for example, when a current is supplied to one heat radiating member 15, the heat dissipation side end of the P-type thermoelectric element and the heat absorption side end of the N-type thermoelectric element are connected to the member 15. It has become. The other heat radiation member 15 is connected to the heat radiation side end of the N-type thermoelectric element and the heat absorption side end of the P-type thermoelectric element.

  Then, the heat dissipation side end portions 32b and 33b, which are the ends opposite to the heat absorption side end portions 32a and 32a of the thermoelectric elements 32 and 33, are connected. The heat radiation side ends 32b and 33b are electrically connected to a heating member 34 made of a material excellent in electrical conductivity and thermal conductivity such as metal (brass, aluminum, copper). The heating member 34 is formed with a through hole at a substantially central portion thereof, and is configured to be inserted at a predetermined interval from the electrode main body portion 13a of the atomizing electrode 13.

Next, characteristic effects of the present embodiment will be described.
(1) Thermoelectric elements 30 and 31 for cooling the atomizing electrode 13 while being connected to the atomizing electrode 13, and thermoelectric elements for heating excess dew condensation water generated on the base portion 13c of the atomizing electrode 13 32 and 33. The heat dissipating member 15 connected to the heat dissipating side ends 30b, 31b of the thermoelectric elements 30, 31 on the opposite end side from the base part 13c, and the heat dissipating member 15 from the surface of the heat dissipating member 15 are disposed on the front end side from the base part 13c. And a heating member 34 heated via thermoelectric elements 32 and 33. By having such a configuration. The heat dissipation member 15 heated by the thermoelectric elements 30 and 31 can be cooled by the thermoelectric elements 32 and 33. Moreover, it becomes possible to dry excess dew condensation water with the heating member 34 heated by the thermoelectric elements 32 and 33.

In addition, you may change embodiment of this invention as follows.
In the first and second embodiments, one thermoelectric element 14 composed of P-type and N-type thermoelectric elements (one pair of P-type and N-type thermoelectric elements) is provided. A configuration in which a plurality of sets of N-type and N-type thermoelectric elements are provided may be employed.

  Although not particularly mentioned in the above embodiments, for example, a material such as gold or platinum having high corrosion resistance may be coated on the surface in order to improve the corrosion resistance of the counter electrode 12. By setting it as such a structure, generation | occurrence | production of the rust etc. by electrostatic fine particle water can be suppressed. In addition, in order to improve the corrosion resistance of the atomizing electrode 13, a material such as gold or platinum having high corrosion resistance may be coated on the surface in the same manner as the counter electrode 12.

In each of the above embodiments, the discharge part 13b on the tip side of the atomizing electrode 13 is spherical, but may be appropriately changed to other shapes such as a cone.
In each of the above embodiments, a high voltage is applied between the atomizing electrode 13 and the counter electrode 12 disposed to face the atomizing electrode 13. However, for example, the configuration may be such that the counter electrode 12 is omitted and a high voltage is applied to the atomizing electrode 13.

Next, a technical idea that can be grasped from the above embodiment and another example will be added below.
(A) In the electrostatic atomizer as described in any one of Claims 1-4,
An electrostatic atomizer, wherein a counter electrode is provided at a position facing the atomizing electrode.

  By providing the counter electrode in this manner, the discharge between the counter electrode and the atomizing electrode can be stabilized, so that electrostatic fine particle water can be stably generated.

  DESCRIPTION OF SYMBOLS 10 ... Electrostatic atomizer, 13 ... Atomization electrode, 13a ... Electrode main-body part, 13b ... Spherical discharge part as a discharge part, 13c ... Base part, 14, 20, 30, 31, 32, 33 ... Thermoelectric element 14a, 20a, 30a, 31a, 32a, 33a ... end of heat absorption side, 14b, 20b, 30b, 31b, 32b, 33b ... end of heat release, 15 ... heat dissipation member as drying means, 15a ... extension for drying Part, 34 ... heating member, W1 ... excess dew condensation water.

Claims (4)

Condensation water is generated on the surface of the atomization electrode by cooling the atomization electrode having a base portion larger in diameter than the electrode main body portion at the base end side of the electrode main body portion at the heat absorption side end portion of the thermoelectric element. An electrostatic atomizer that generates charged fine particle water by applying a voltage to the dew condensation water held in the discharge part on the tip side of the atomization electrode,
A drying unit that dries excess condensed water by using heat of the heat radiation side end of the thermoelectric element opposite to the heat absorption side end of the thermoelectric element on the tip side of the atomization electrode. An electrostatic atomizer characterized by comprising: In the electrostatic atomizer of Claim 1,
The electrostatic atomizer characterized by the above-mentioned. The said drying means was comprised so that it might be connected with the thermal radiation side edge part of the said thermoelectric element in the front end side rather than the said base part. In the electrostatic atomizer of Claim 1,
The drying means is connected to the heat dissipation side end of the thermoelectric element on the opposite end side of the base portion, and extends from the heat dissipation main body portion to the tip side of the base portion. An electrostatic atomizer comprising: a drying extension portion capable of transferring heat from the heat radiating main body portion. In the electrostatic atomizer of Claim 1,
The thermoelectric element is connected to the atomizing electrode and is cooled with a first thermoelectric element for cooling the atomizing electrode and a second thermoelectric element for heating excess dew condensation water generated at the base portion of the atomizing electrode. With elements,
The drying means is disposed on the heat radiation side end of the first thermoelectric element on the opposite side of the base portion from the heat radiation side end, and is disposed on the front end side of the base portion and the heat radiation main body. An electrostatic atomizer comprising: a heating member heated from the surface of the part through the second thermoelectric element.

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