JP2007029850A - Electrostatic atomizer apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electrostatic atomizer which enables quickly generating a charged microparticle water while a trouble of water supplying and adhesion removal is not required and also securing of insulation of a lead member and prevention of dew condensation can be achieved without enlarging the apparatus while intrusion of dew-condensed water of a discharge electrode in the side of a Peltier unit is securely prevented. <P>SOLUTION: The electrostatic atomizer generates water derived from moisture in air on the discharge electrode 4 by cooling the discharge electrode 4 with a cooling plate 2 of the Peltier unit 1, wherein the apparatus has a receiving frame body 17 with the shape of a vessel for sealing the cooling plate 2 and a circuit part C between a radiation plate 3 and the receiving frame body 17, and also the lead member 14 for applying a high voltage to the discharge electrode 4 is laid underground the receiving frame body 17. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an electrostatic atomizer that generates nanometer-sized charged fine particle water by an electrostatic atomization phenomenon.

  The electrostatic atomizer is a charged fine particle water having a high charge in the nanometer size by supplying water to the discharge electrode and applying a high voltage to the discharge electrode to atomize the water held in the discharge electrode. (See Patent Document 1). Since the particle size of the charged fine particle water is about 3 to several tens of nm and smaller than 70 nm, which is the size of the horny cells of the human body, the exposure to the charged fine particle water can cause the surface of the stratum corneum to reach the back. Moisture is sufficiently replenished to obtain a high moisturizing effect. Moreover, since other effects, such as a deodorizing effect and the moisturizing effect of hair, are also obtained, various effects are acquired by preparing for various goods.

However, the conventional electrostatic atomizer as shown in the above-mentioned Patent Document 1 uses, as a water supply means, a water tank to be filled with water, and the water in this water tank to the discharge electrode by capillary action. It has a structure with a water transport section to be transported, which causes the user to be forced to supply water continuously into the water tank, and the water to be replenished in the water tank is like tap water. In the case of water containing impurities such as Ca and Mg, this impurity reacts with CO ₂ in the air, so that CaCO ₃ , MgO and the like adhere to the discharge electrode, and this adhering matter generates charged fine particle water. There was a problem of preventing.

Therefore, in order to solve the above problem, the present inventor first provided a Peltier unit as a water supply means instead of a water tank or the like, and installed a discharge electrode on a cooling plate provided in the Peltier unit. The structure which connected the lead member for a high voltage application to the electrode was considered. According to the said structure, water can be directly produced | generated to a discharge electrode based on the water | moisture content in air, and this produced water can be rapidly atomized by the high voltage application to a discharge electrode. Therefore, the labor of water replenishment becomes unnecessary, and the obtained water does not contain impurities such as Ca and Mg, so that precipitation of CaCO ₃ , MgO and the like is prevented.

  However, the electrostatic atomizer having the above-described configuration has the following problems. The first problem is that since the discharge electrode is erected on the cooling plate, water generated by the discharge electrode may enter the Peltier unit from the cooling plate side.

The second problem is that the lead member connected to the discharge electrode is exposed to the atmosphere, so that it is difficult to ensure insulation from the periphery of the lead member, and the lead member is cooled together with the discharge electrode. As a result, excessive condensation occurs on the surface of the film, so that extra cooling energy is required, resulting in a decrease in electrostatic atomization efficiency. In order to solve the above problem, a method of covering the lead member with an insulator such as rubber may be considered. However, in this case, the diameter of the lead member becomes considerably large, which leads to an increase in the size of the entire apparatus.
Japanese Patent No. 3260150

  The present invention has been invented in view of the above-mentioned problems, and has a structure in which a discharge electrode is erected on the cooling plate of the Peltier unit, thereby eliminating the need for water replenishment and removal of deposits, and charged fine particle water. In addition, it is possible to reliably prevent the dew condensation water from the discharge electrode from entering the Peltier unit, and to ensure insulation of the lead member and prevent condensation without increasing the size of the device. It is an object of the present invention to provide an electrostatic atomizer capable of performing the above.

  In order to solve the above problems, an electrostatic atomizer according to the present invention is provided on a Peltier unit 1 having a circuit portion C sandwiched between a cooling plate 2 and a heat radiating plate 3, and on the cooling plate 2 of the Peltier unit 1. The discharge electrode 4 is provided, and the discharge electrode 4 is cooled by the cooling plate 2 of the Peltier unit 1 to generate water on the discharge electrode 4 based on the moisture in the air. An electrostatic atomization device that generates charged fine particle water by atomizing water held by the discharge electrode 4 by applying a voltage, and is fixed to the heat radiating plate 3 with the discharge electrode 4 penetrating. A lead member connected to the discharge electrode 4 for applying a high voltage while having a housing frame 17 that forms a sealed space S for housing the cooling plate 2 and the circuit portion C between the heat sink 3 14 is embedded in the housing frame 17.

In the electrostatic atomizer having the above-described configuration, the water to be used for electrostatic atomization is directly generated at the discharge electrode 4, so that the user himself / herself does not need to replenish water and the generated water Does not contain impurities such as Ca and Mg like tap water, so that deposition of CaCO ₃ and MgO is prevented. In addition, since water is directly generated at the discharge electrode 4, there is an advantage that it takes a short time to generate charged fine particle water after the start of operation, a tank for filling water, and water in the tank. There is an advantage that the entire apparatus is made compact because no transport means for transporting to the discharge electrode 4 is required.

  Moreover, in the electrostatic atomizer of this example, the cooling plate 2 and the circuit portion C are accommodated in the sealed space S formed by using the accommodating frame 17, so that the electrostatic atomizer is generated on the discharge electrode 4 side. It is possible to reliably prevent water from entering the sealed space S.

  In addition, since the lead member 14 is embedded in the housing frame 17, the lead member 14 need not be provided with a special insulator covering the lead member 14, and insulation with the surroundings is ensured. In addition, although the lead member 14 is cooled together with the discharge electrode 4, the surface area of the lead member 14 in the embedded state is small in contact with the atmosphere and the temperature drop is suppressed, so that excessive dew condensation on the surface of the lead member 14 is prevented. As a result, the electrostatic atomization efficiency is improved without consuming excess cooling energy.

  Moreover, the electrostatic atomizer of the said structure is equipped with the counter electrode 13 located facing the discharge electrode 4, and the discharge electrode 4 is applied by applying a high voltage between the discharge electrode 4 and the counter electrode 13. It is also preferable that the charged fine particle water is generated by atomizing the water held in the water. In this case, since the discharge current between the discharge electrode 4 and the counter electrode 13 can be confirmed, the discharge atomization can be stably controlled based on the current value.

  Furthermore, in the electrostatic atomizer having the above-described configuration, it is preferable to include the support 12 formed integrally with the housing frame 17 in order to support the counter electrode 13. By doing in this way, positioning of the cooling plate 2 accommodated in the housing frame 17 and the counter electrode 13 supported by the support body 12, and in turn, positioning of the discharge electrode 4 and the counter electrode 13 can be easily performed. It can be done reliably.

  It is also preferable that the discharge electrode joint portion 23 formed on the lead member 14 is press-fitted to the discharge electrode 4. By doing in this way, the discharge electrode 4 and the lead member 14 can be electrically joined without using solder or a conductive adhesive, and the production efficiency is improved. In addition, when the counter electrode 13 is provided, the positioning accuracy between the discharge electrode 4 and the counter electrode 13 is improved, so that the electrostatic atomization efficiency is improved.

  It is also preferable that the lead member 14 is formed using a thin metal plate, and the connector joining portion 24 is formed by folding an end portion of the thin metal plate. In this way, the lead member 14 can be made thin and have high thermal resistance to reduce heat leakage. Further, the connector joint 24 can be folded to increase the thickness to increase strength. It is possible to improve and prevent deformation due to connector insertion and removal.

  The present invention has a structure in which a discharge electrode is erected on the cooling plate of the Peltier unit, so that it is possible to quickly generate charged fine particle water while eliminating the need for water replenishment and deposit removal. As a result, it is possible to reliably prevent the dew condensation water from entering the Peltier unit and to achieve insulation of the lead member and prevention of dew condensation without increasing the size of the apparatus.

  Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings. In FIG. 1, the cross-sectional shape of the electrostatic atomizer of the 1st example in embodiment of this invention is shown. The electrostatic atomizer of this example uses a Peltier unit 1 in which a circuit portion C having a Peltier element 7 is sandwiched between a cooling plate 2 and a heat radiating plate 3, and a discharge electrode 4 is provided on the cooling plate 2. It can be cooled freely by standing up.

  The Peltier unit 1 is composed of a pair of flat circuit boards 5 each made of an insulating material having high thermal conductivity (alumina in this example) and having an electric circuit 6 formed on one side thereof. Each Peltier element 7 is sandwiched between the circuit boards 5 by sandwiching a Peltier element 7 made of a sintered material or a melted material facing at least one pair (eight pairs in this example) so as to face the circuit 6 side. 7 and the electric circuits 6 on both sides are joined using solder (Sn—Sb in this example) so as to be electrically and mechanically connected, and the electric circuits 6 on both sides and a plurality of Peltier elements are joined. 7, the circuit portion C of the Peltier unit 1 is formed. The electric circuit 6 formed on the circuit board 5 and connecting the Peltier elements 7 in series as described above is formed using Cu, Ag, Ag-Pd, Ag-Pt, MoMn, or the like by printing or etching. In order to improve solder wettability and prevent corrosion of the electric circuit 6, it is preferable to apply Ni and Au plating to the surface of the electric circuit 6.

  The electric circuit 6 on one circuit board 5 is extended to the outside of a housing frame 17 which will be described later, and is connected via a Peltier input lead 8 that is soldered to the extended portion of the electric circuit 6. When the circuit portion C is energized, it is directed from one circuit board 5 (that is, the cooling circuit board 5) to the other circuit board 5 (that is, the heat dissipation circuit board 5). Heat is provided to move.

  The electrostatic atomizer of this example forms a cooling plate 2 that is insulative and has high thermal conductivity by the circuit board 5 on the cooling side, and is also insulative by the circuit board 5 on the heat dissipation side. In addition, the heat radiating plate 3 having a high thermal conductivity is formed, and the vertical and horizontal dimensions of the heat radiating plate 3 in plan view are sufficiently larger than the vertical and horizontal dimensions of the cooling plate 2, so that the heat radiating plate 3 and The cooling plate 2 and the circuit portion C can be hermetically sealed between the container-like storage frame 17 and the heat radiating plate 3 to be joined. Specifically, the cooling plate 2 has a vertical and horizontal dimension of 5.5 × 5.5 mm and a thickness of 0.635 mm, whereas the radiator plate 3 has a vertical and horizontal dimension of 20 × 16 mm and a thickness of 0.5 mm. is there. The Peltier element 7 has a vertical and horizontal dimension of 0.65 × 0.65 mm and a height of 1 mm.

  On the surface of the heat radiating plate 3 (that is, the circuit board 5 on the heat radiating side) opposite to the side on which the electric circuit 6 is formed, the thermal conductivity so that the vertical and horizontal dimensions are larger than the heat radiating plate 3 in plan view. The radiating fins 11 formed using a high material (aluminum in this example) are connected. The connection is performed by screwing the screw member 10 from the heat radiating plate 3 side to the heat radiating fin 11 side through a through hole 3 a provided in the peripheral edge of the heat radiating plate 3. Here, it is preferable to interpose heat conductive grease between the heat radiating plate 3 and the heat radiating fins 11.

  A pair of left and right supports 12 are erected on the peripheral portion surrounding the contact portion with the heat radiating plate 3 on the surface of the radiating fin 11 that is connected to the heat radiating plate 3 (upper surface 11a in the figure). The support 12 is formed in a columnar shape using an insulating material (in this example, LCT or PBT), and the counter electrode 13 is supported at the tips of both supports 12. The counter electrode 13 is made of a material having high electrical conductivity (SUS in this example), and has a ring-shaped main body 13a having an inner diameter of 8 mm, an outer diameter of 12 mm, and a thickness of 0.5 mm, and the main body. A pair of connection portions 13 b extending from the portion 13 a is formed, and each connection portion 13 b is fixed to the support 12.

  The discharge electrode 4 is formed of a main body in an elongated cylindrical shape having a diameter of 0.5 mm and a height of 8 mm using a material having high electrical conductivity and thermal conductivity (Cu in this example), and having a diameter of 1 mm on the base end side. A pedestal having a height of 0.5 mm is formed, and a hemispherical portion having a diameter of 0.5 mm as shown in FIG. Here, in order to suppress corrosion of the surface of the discharge electrode 4, it is preferable to apply Ni and Au plating to the surface.

  The tip of the discharge electrode 4 may have a shape other than the hemispherical shape, and for example, it is preferable to have the shape shown in FIGS. 2 (b) has a conical shape, FIG. 2 (c) has a truncated cone shape, and FIG. 2 (d) supports a spherical body via a cylindrical neck portion. The shape shown in FIG. 2E is a shape in which a spherical body is supported via a truncated cone-shaped neck portion.

  On the surface of the cooling plate 2 (that is, the circuit board 5 on the cooling side) opposite to the side where the electric circuit 6 is formed, an uneven portion (not shown) having a circular shape with a radius of 1 mm is provided at the center position. The discharge electrode 4 and the cooling plate 2 are joined by positioning and soldering the pedestal portion of the discharge electrode 4 to the uneven portion. As the solder, a solder having a high thermal conductivity is used. However, when an adhesive is used for joining the discharge electrode 4 and the cooling plate 2, an adhesive having a high thermal conductivity is naturally used. In the joined state, the counter electrode 13 supported by the support 12 is fixed at a position 3 mm in height from the tip of the discharge electrode 4, and one connecting portion 13 b of the counter electrode 13 and a storage frame described later. The other end side of the lead member 14, which is embedded in the body 17 and electrically connected at one end side to the discharge electrode 4, is electrically connected via the high voltage application unit 15 and the ammeter 16. .

  The housing frame 17 includes a container-shaped main portion formed by extending a side peripheral wall 17b downward from the periphery of the bottom wall 17a having a rectangular shape in plan view, and the side peripheral wall from the periphery of the bottom wall 17a. 17b is a member having an enclosing wall 17d extending in a direction opposite to that of 17b and having a through-hole 20 penetrating through a central portion of the bottom wall 17a. In the example, PBT) is integrally formed.

  Then, the container-shaped main portion having the opening of the housing frame 17 is covered to house the cooling plate 2 and the Peltier element 7 in the housing frame 17, and the discharge electrode 4 is placed in the through hole 20 of the bottom wall 17a. It is inserted and protruded out of the housing frame 17, and the opening edge portion 17 c, which is the tip edge of the side peripheral wall 17 b, is brought into contact with the heat sink 3. In this state, a thickness made of epoxy resin or silicon resin is formed between the opening edge 17c of the housing frame 17 and the heat radiating plate 3 and between the bottom wall 17a of the housing frame 17 and the cooling plate 2. The circuit part C and the cooling plate 2 of the Peltier unit 1 are housed in the sealed space S surrounded by the housing frame 17 and the heat radiating plate 3 by being fixed via an adhesive 21 having a thickness of about 50 μm to 500 μm.

  The lead member 14 is formed in a crank shape in side view by bending a thin conductive metal sheet as shown in FIGS. 3A to 3C, and has one end in the longitudinal direction. A discharge electrode joint 23 is formed on the side, and a connector joint 24 is formed on the other end. The connector joint 24 is formed in a double structure by folding the end of a thin metal plate in half, and can withstand the insertion pressure of the connector by increasing the overall plate thickness by folding. Strength is given. On the other hand, the portion of the lead member 14 excluding the connector joint 24 (including the discharge electrode joint 23) has a thin plate thickness and higher thermal resistance than the connector joint 24 and the discharge electrode 4 (that is, thermal conductivity). Therefore, heat leakage is suppressed.

  The lead member 14 is subjected to a crushing process as shown in FIG. As a result, the cross-sectional area of the lead member 14 is reduced and the strength is increased since the work is hardened during crushing. The crushing process is preferably performed before the die is cut from the metal thin plate into the shape shown in FIG.

  The lead member 14 is embedded in the thick portion 18 formed on the bottom wall 17a to the surrounding wall 17d of the housing frame 17, and the discharge electrode joint 23 on one end side protrudes into the through hole 20; Further, the connector joint 24 on the other end side is protruded laterally from the surrounding wall 17d. In the through hole 20, the discharge electrode 4 is press-fitted and joined to the connection hole 25 penetrating the discharge electrode joint portion 23, and the entire through hole 20 including the joint portion is filled with an epoxy resin sealing agent 26. Let it seal.

  As described above, the electrostatic atomizer of this example has a cooling plate made of a material having an insulating property and a high thermal conductivity on the cooling side of a large number of Peltier elements 7 electrically connected through the electric circuit 6. Means for supplying water to the discharge electrode 4 of the Peltier unit 1 constructed by connecting the heat sinks 3 made of a material that is also insulative and has high thermal conductivity on the heat radiation side. A columnar discharge electrode 4 having a high thermal conductivity which is erected on the cooling plate 2 of the Peltier unit 1 via a solder or an adhesive having a high thermal conductivity; Since the counter electrode 13 located opposite to the tip and the high voltage applying unit 15 for applying a high voltage between the discharge electrode 4 and the counter electrode 13 are provided, the Peltier element 7 in the Peltier unit 1 and so on The Peltier unit is energized by energizing the circuit part C. The discharge electrode 4 itself is cooled via the cooling plate 2 of the first electrode, and water is generated on the surface of the discharge electrode 4 based on the moisture in the air. By applying a high voltage (4.5 kV in this example) between the discharge electrode 4 and the counter electrode 13 so that the electric charge is concentrated, the water generated and retained directly on the discharge electrode 4 is It can be attracted to the side and atomized by the electrostatic atomization phenomenon at the tip portion to generate charged fine particle water having a high charge in the nanometer size. The charged fine particle water passes through the central hole of the main body 13a that forms the ring shape of the counter electrode 13, and is discharged to the outside of the electrostatic atomizer.

  The electrostatic atomization phenomenon here is that water held in the discharge electrode 4 is charged by a voltage applied between the discharge electrode 4 and the counter electrode 13, and the Coulomb force acts on the charged water. The water level rises locally to form a conical shape (Taylor cone), and the water splits so that it can be repelled by the repulsive force of the electric charge that is concentrated and concentrated at the tip of the conical water. This is thought to be a phenomenon in which electrostatic atomization occurs due to scattering (Rayleigh splitting).

That is, in the electrostatic atomizer of this example, the user himself / herself does not need to replenish water, and the generated water does not contain impurities, so CaCO ₃ , MgO, etc. in the discharge electrode 4. Is prevented from depositing. In addition, since water is directly generated at the discharge electrode 4, the time from the start of operation of the electrostatic atomizer (that is, the start of energization to the Peltier element 7) to the generation of charged fine particle water can be shortened. There is an advantage that the entire apparatus is made compact because there is no need to provide a tank for filling water and a transport means for transporting the water in the tank to the discharge electrode 4.

  Furthermore, in the electrostatic atomizer of this example, the cooling plate 2 and the Peltier element 7 are accommodated in the container-like housing frame 17, and the discharge electrode 4 standing on the cooling plate 2 is accommodated in the housing frame. The tip of the housing frame 17 is inserted outside through the through-hole 20 of the body 17 and the opening edge 17c of the housing frame 17 is adhered to the heat radiating plate 3 in this state, and the bottom wall 17a of the housing frame 17 and the cooling plate 2 is adhered, the cooling plate 2 and the Peltier element 7 are reliably sealed in the sealed space S surrounded by the housing frame 17 and the heat radiating plate 3. Therefore, water generated on the discharge electrode 4 side is reliably prevented from entering the sealed space S.

  Furthermore, a situation in which migration occurs due to water adhering to the joint portion of the cooling plate 2 with the discharge electrode 4 or the circuit portion C in the Peltier unit 1 is also prevented. Migration here is a phenomenon in which a metal material moves into the insulator as the insulator adsorbs water in the presence of current and voltage. That is, the migration at the junction between the discharge electrode 4 and the cooling plate 2 means that the conductive metal material forming the discharge electrode 4 moves to the surface or inside of the insulating material forming the cooling plate 2 with the adsorption of water. The phenomenon is that the migration in the circuit part C in the Peltier unit 1 means that the metal material forming the circuit part C moves to the surface or inside of the insulating material forming the cooling plate 2 or the heat radiating plate 3 with the adsorption of water. It is a phenomenon.

  In addition, since the electrostatic atomizer of this example is embedded in the lead member 14 made of a thin metal plate in the housing frame 17, the insulation between the lead member 14 and the surrounding area is ensured. Yes. In addition, although the lead member 14 is cooled together with the discharge electrode 4, since it is buried, there are few portions of the surface area of the lead member 14 that come into contact with the atmosphere and the temperature drop is suppressed, so excessive dew condensation on the surface of the lead member 14 is prevented. As a result, the electrostatic atomization efficiency is improved without consuming excessive cooling energy. In addition, since the lead member 14 is embedded, even if a force is applied at the time of connector joining, deformation hardly occurs and the quality is stabilized.

  In addition, the generation of water in the discharge electrode 4 is mainly generated by condensation of moisture in the air by cooling the discharge electrode 4 so that the surrounding air is cooled below the dew point. If the cooling capacity of the unit 1 is too strong, moisture in the air may freeze on the discharge electrode 4, and in this case, water can be generated by melting the frozen ice. As the melting means, the temperature of the discharge electrode 4 is raised by lowering or stopping energization to the Peltier unit 1, or the discharge side 4 is temporarily switched between the cooling side and the heat dissipation side of the Peltier unit 1 by reversing the polarity. Is suitably heated.

  In addition, a configuration may be adopted in which charged fine particle water is generated by applying a high voltage to the discharge electrode 4 without providing the counter electrode 13. In this case, a higher voltage (for example, 6 kV) may be applied than in the illustrated example provided with the counter electrode 13 so that the discharge electrode 4 side becomes a negative electrode and the charge is concentrated. The entire apparatus can be reduced in size as compared with the device. In addition, since the charged fine particle water discharged from the discharge electrode 4 does not adhere to the counter electrode 13, the amount of charged fine particle water that can be discharged into the atmosphere can be increased. On the other hand, in the electrostatic atomizer of the illustrated example having the counter electrode 13, the discharge current between the discharge electrode 4 and the counter electrode 13 is confirmed using an ammeter 16 (see FIG. 1). Therefore, there is an advantage that the electrostatic atomization phenomenon can be stably controlled based on the current value.

  Next, the electrostatic atomizer of the second example according to the embodiment of the present invention will be described with reference to FIG. Only the characteristic configuration different from the first example will be described in detail below.

  The housing frame 17 provided in the electrostatic atomizer of this example is formed by integrally forming the support 12 for supporting the counter electrode 13, and from the opening edge 17 c of the housing frame 17 that forms a container shape. The connecting portion 30 is extended outward, and the base end portion of the support 12 is connected to the extended end of the connecting portion 30. The support 12 is bonded to the heat radiating plate 3 through the adhesive 21 integrally with the housing frame 17. In addition, a convex wall-shaped positioning uneven portion 31 is formed on the inner bottom surface of the bottom wall 17 a of the housing frame body 17, and the cooling plate 2 and the housing frame are fitted into the uneven portion 31. Positioning with the body 17 is performed. And in this example, after positioning using the said positioning uneven | corrugated | grooved part 31, the accommodation frame 17 is adhere | attached on the cooling plate 2 and the heat sink 3, and the counter electrode 13 supported by the support body 12 is carried out. The positioning with respect to the discharge electrode 4 can be performed easily and reliably. Further, since the protruding wall-shaped positioning uneven portion 31 prevents the adhesive 21 that adheres the housing frame 17 and the cooling plate 2 from protruding, variation in cooling performance is also prevented. In this example, the sealing agent 26 is not filled in the through hole 20, but the through hole 20 may be sealed as in the first example.

  Next, the electrostatic atomizer of the third example according to the embodiment of the present invention will be described with reference to FIG. 5, but the same components as those of the second example described above are denoted by the same reference numerals and detailed description thereof is omitted. Only the characteristic configuration different from the second example will be described in detail below.

  The lead member 14 embedded in the housing frame 17 of this example is not formed with the discharge electrode joint portion 23 for press-fitting the discharge electrode 4 as in the first example, and one end side of the lead member 14 is connected to the lead member 14. While projecting into the through-hole 20, the projecting portion and the pedestal portion of the discharge electrode 4 are electrically joined by wire bonding. For the wire bonding, a wire 40 made of Au or Al and having a diameter of 25 μm is used, and by interposing this wire 40, the heat transfer between the lead member 14 and the discharge electrode 4 is suppressed, and the cooling efficiency of the discharge electrode 4 is reduced. Is improved, and as a result, electrostatic atomization efficiency is improved. 5B, one end of the wire 40 may be joined to the electric circuit 41 formed on the surface of the cooling plate 2 so as to be electrically joined to the discharge electrode 4, as indicated by a chain line. .

  Next, the electrostatic atomizer of the fourth example according to the embodiment of the present invention will be described with reference to FIG. 6, but the same components as those of the second example described above are denoted by the same reference numerals and detailed description thereof is omitted. Only the characteristic configuration different from the second example will be described in detail below.

  The lead member 14 embedded in the housing frame 17 of this example is not formed by bending a single metal thin plate as in the second example, but is composed of a flat metal thin plate with a small thickness. Connector-side lead member 51 having a discharge-electrode-side lead member 50 having a discharge-electrode joint 23 on the side and a connector-side lead member 51 made of a thick metal plate that is crank-shaped as viewed from the side. The other end of each is electrically joined by spot welding or the like. By using the lead member 14 as described above, the high-strength connector-side lead member 51 with a large plate thickness ensures the strength that can withstand the insertion pressure of the connector, and the plate thickness is thin and the thermal resistance is high (ie, the thermal conductivity is high). It is possible to suppress heat leakage in the discharge electrode side lead member 50.

  Next, the electrostatic atomizer of the fifth example in the embodiment of the present invention will be described with reference to FIG. Only the characteristic configuration different from the first example will be described in detail below.

  In the housing frame 17 having the container shape of the present example, a flange portion 60 is extended outward from the opening edge portion 17 c, and the flange portion 60 extends outward beyond the outer edge of the radiator plate 3. Provided. And in the part exceeding the heat sink 3 of the said flange part 60, the storage frame 17 and the radiation fin 11 are screwed through the screw member 61. As shown in FIG. As in the first example, the heat radiating plate 3 is bonded to the housing frame 17 using the adhesive 21, and the heat radiating plate 3 and the heat radiating fins 11 are connected via the housing frame 17 to which both 3 and 11 are fixed. Is the structure. That is, in this example, in order to connect the heat radiating plate 3 and the heat radiating fins 11, it is not necessary to secure a space for forming the through hole 3 a as in the first example in the heat radiating plate 3. The cost can be reduced by reducing the substrate cost.

  The configurations of the examples described above can be combined as appropriate without departing from the spirit of the present invention.

It is explanatory drawing which shows the cross-sectional shape of the electrostatic atomizer of the 1st example in embodiment of this invention. It is explanatory drawing which shows the external shape of the discharge electrode of an electrostatic atomizer same as the above, (a)-(e) has shown the various modifications. It is explanatory drawing which shows the lead member of an electrostatic atomizer same as the above, (a) is a front view state before a bending process, (b) is a side view state before a bending process, (c) is a side surface after a bending process. The visual state, (d) illustrates the crushing process performed on the AA ′ cross section of (c). It is explanatory drawing which shows the cross-sectional shape of the electrostatic atomizer of the 2nd example in embodiment of this invention. It is explanatory drawing which shows the electrostatic atomizer of the 3rd example in embodiment of this invention, (a) is the cross-sectional shape of the whole apparatus, (b) demonstrates the principal part of (a). It is explanatory drawing which shows the cross-sectional shape of the electrostatic atomizer of the 4th example in embodiment of this invention. It is explanatory drawing which shows the cross-sectional shape of the electrostatic atomizer of the 5th example in embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Peltier unit 2 Cooling plate 3 Heat sink 4 Discharge electrode 12 Support body 13 Counter electrode 14 Lead member 17 Housing frame body 23 Discharge electrode joint part 24 Connector joint part C Circuit part S Sealed space

Claims (5)

  A Peltier unit having a circuit part sandwiched between a cooling plate and a heat sink, and a discharge electrode standing on the cooling plate of the Peltier unit. The discharge electrode is cooled by the cooling plate of the Peltier unit and the discharge An electrostatic atomizer that generates water based on the moisture in the air and generates charged fine particle water by atomizing the water held by the discharge electrode by applying a high voltage to the discharge electrode. In addition, the housing includes a housing frame that forms a sealed space for housing the cooling plate and the circuit portion between the heat sink by fixing the discharge electrode to the heat sink and applying a high voltage. For this purpose, a lead member connected to the discharge electrode is embedded in the housing frame.   A counter electrode located opposite to the discharge electrode, and by applying a high voltage between the discharge electrode and the counter electrode, water held by the discharge electrode is atomized to generate charged fine particle water The electrostatic atomizer according to claim 1, wherein   The electrostatic atomizer according to claim 2, further comprising a support body integrally formed with the housing frame body to support the counter electrode.   The electrostatic atomizer according to any one of claims 1 to 3, wherein the discharge electrode joint formed on the lead member is press-fitted to the discharge electrode. The lead member is formed by using a thin metal plate, and the connector joining portion is formed by folding an end portion of the thin metal plate. Electrostatic atomizer.

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