JP2008238060A - Electrostatic atomizing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electrostatic atomizing apparatus capable of promptly and stably generating charged particulate water by uniformalizing electric field distribution around a discharge electrode. <P>SOLUTION: The electrostatic atomizing apparatus A is provided with a Peltier unit 13 being a water supply means for supplying water to the discharge electrode 11 and atomizes water held on the discharge electrode 11 by applying high voltage to the discharge electrode 11. The discharge electrode 11 is formed to be rotatable around the axis line in the longitudinal direction as a rotary axis 50. The Peltier unit 13 has a cooling part 14 and a heat dissipation part 15 and the discharge electrode 11 is provided in the cooling part 14 side of the Peltier unit 13 so as to produce water on the discharge electrode 11 using moisture in air. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

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

  Conventionally, a discharge electrode and a water supply means for supplying water to the discharge electrode have been provided, and electrostatic electricity that generates charged fine particle water by atomizing the water held by the discharge electrode by applying a high voltage to the discharge electrode. Atomization devices are known. As supply means for supplying water to the discharge electrode, there are a suction type and a dew condensation type.

The invention shown in Patent Document 1 is known as an electrostatic atomizer using a condensation type. As shown in FIG. 4, the conventional electrostatic atomizer A includes a discharge electrode 11, a counter electrode 12 positioned opposite the discharge electrode 11, and water supply means for supplying water to the discharge electrode 11. In addition, by applying a high voltage between the discharge electrode 11 and the counter electrode 12, the water held in the discharge electrode 11 is atomized to generate charged fine particle water. As a water supply means for supplying water to the discharge electrode 11, the discharge electrode 11 is cooled by the endothermic body 13 and moisture in the air is condensed on the discharge electrode 11, thereby generating condensed water in the discharge electrode 11. .
JP 2006-000826 A

  In the conventional example shown in FIG. 4 described above, a high voltage is applied to the discharge electrode 11, and the condensed water generated in the discharge part 11 a at the tip of the discharge electrode 11 is charged, and the charged dew water has a Coulomb force. This condensed water rises into a cone with a sharp tip (Taylor cone). At this time, if the applied voltage exceeds the surface tension of water and is a high voltage capable of causing splitting and scattering (Rayleigh splitting), the condensed water generated in the discharge part 11a becomes a Taylor cone shape and becomes a Rayleigh. Electrostatic atomization that causes splitting to generate nanometer-sized charged fine particle water is performed and released into the atmosphere.

  However, in the above-described conventional example, the electric field distribution generated varies depending on the use environment, and in that case, the Taylor cone shape may be inclined (particularly at the beginning of atomization). Further, when the counter electrode 12 is not provided, the Taylor cone shape may always be unstablely swung. In that case, the trouble that the amount of atomization to disperse decreases or the start of atomization becomes late occurs. Here, in order to stabilize the generation of the charged fine particle water and perform the generation of the charged fine particle water more quickly, it is necessary to separately add a new configuration of the electrode structure that makes the electric field distribution uniform. There exists a problem which the electrostatic atomizer A will enlarge.

  The present invention was invented in view of the background art described above, and its purpose is to perform generation of charged fine particle water more quickly and stably by making the electric field distribution around the discharge electrode uniform. 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, the invention according to claim 1 of the present application includes water supply means for supplying water to the discharge electrode, and atomizes the water retained in the discharge electrode by applying a high voltage to the discharge electrode. The electrostatic atomizer to be provided has a rotation drive unit that rotates the discharge electrode about the longitudinal axis as the rotation axis.

  In the invention according to claim 2 of the present application, in the electrostatic atomizer according to claim 1, the water supply means is a Peltier unit having a cooling part and a heat radiating part, and the discharge electrode is based on moisture in the air. A discharge electrode is provided on the cooling part side of the Peltier unit so that water is generated.

  The invention according to claim 3 of the present application is the electrostatic atomizer according to claim 1 or 2, further comprising a counter electrode positioned opposite to the discharge electrode, and applying a high voltage between the discharge electrode and the counter electrode. By doing so, the water held by the discharge electrode is atomized.

  In the invention according to claim 4 of the present application, in the electrostatic atomizer according to any one of claims 1 to 3, the discharge electrode includes an airflow generation unit that generates a regulated airflow by rotation of the discharge electrode. It is characterized by that.

  The invention according to claim 5 of the present application is characterized in that the electrostatic atomizer according to any one of claims 1 to 4 further includes a rotation drive control unit that controls the rotation of the discharge electrode.

  According to a sixth aspect of the present invention, in the electrostatic atomizer according to the fifth aspect, the rotation drive control unit rotates the discharge electrode after a predetermined time has elapsed since the start of application of a high voltage to the discharge electrode. It is characterized by the fact that

  According to the seventh aspect of the present invention, in the electrostatic atomization apparatus according to the fifth aspect, the current measurement unit that measures the discharge current value is provided, and the rotation drive control unit stores the measurement value in the current measurement unit in advance. The discharge electrode is rotated when it is smaller than a predetermined value stored in the section.

  In the invention according to claim 8 of the present application, in the electrostatic atomization apparatus according to claim 5, the electrostatic atomizer includes a current measurement unit that measures a discharge current value, and the rotation drive control unit is configured to respond to a measurement value in the current measurement unit. It is characterized in that the rotational speed of the discharge electrode is changed.

  In the invention according to claim 9 of the present application, in the electrostatic atomization apparatus according to claim 5, the electrostatic atomizer includes a distance measuring unit that measures the distance to the object, and the rotational drive control unit converts the measured value in the distance measuring unit to the measured value. Accordingly, the rotational speed of the discharge electrode is changed accordingly.

  In the electrostatic atomizer according to the first aspect of the present invention, the discharge electrode can be rotated by including a rotation drive unit that rotates the discharge electrode about the longitudinal axis as the rotation axis. By rotating the discharge electrode, it is possible to eliminate non-uniformity of the electric field distribution around the discharge electrode due to variations in the dimensional accuracy and position accuracy of the discharge electrode caused by the dimensional error and assembly error of each component. Since the electric field distribution around the discharge electrode is made uniform, the water supplied to the tip of the discharge electrode is charged, and the shape raised in a cone shape with a sharp tip (Taylor cone shape) is stabilized. Can be generated more promptly and stably.

  In the electrostatic atomizer according to the second aspect of the present invention, in particular, water is generated in the discharge electrode based on the moisture in the air by the water supply means using the Peltier unit. As a result, the charged fine particle water can be generated more quickly.

  In the electrostatic atomizer according to the third aspect of the present invention, in particular, by providing the counter electrode, the electric field strength is increased, so that the Taylor cone shape is further stabilized and the generation of charged fine particle water can be stably performed. Further, when the Peltier unit is used as the water supply means, the water is more quickly collected at the tip of the discharge electrode due to the electric field strength, so that the charged fine particle water can be generated more rapidly.

  In the electrostatic atomizer according to the fourth aspect of the present invention, in particular, by providing the air flow generation unit, it is possible to generate the air flow in the scattering direction of the charged fine particle water. Thereby, the charged fine particle water can be scattered further.

  In the electrostatic atomizer of the invention according to claim 5 of the present application, in particular, since it includes a rotation drive control unit that controls the rotation of the discharge electrode, the rotation can be started and stopped, or the rotation speed can be changed. The discharge electrode can be appropriately rotated according to the situation.

  In the electrostatic atomizer according to the sixth aspect of the present invention, in particular, by including a rotation drive control unit that rotates the discharge electrode after a predetermined time has elapsed since the start of application of a high voltage to the discharge electrode. It is possible to prevent the discharge electrode from rotating before condensed water collects at the tip (discharge portion) of the discharge electrode. This eliminates the inhibition of dew condensation caused by the rotating wind, and stable condensed water quickly gathers at the tip (discharge portion) of the discharge electrode, so that charged fine particle water can be generated more quickly.

  In the electrostatic atomizer according to the seventh aspect of the present invention, particularly, the electrostatic atomizer further includes a current measurement unit that measures the discharge current value, and the rotation drive control unit stores the measurement value in the current measurement unit in the storage unit in advance. Since the discharge electrode is rotated when it is smaller than the predetermined value, it can be rotated only when the current value is low and the discharge is unstable. As a result, the energy efficiency consumed can be increased without using unnecessary power.

  In the electrostatic atomization apparatus according to the eighth aspect of the present invention, in particular, the electrostatic atomizer further includes a current measuring unit that measures the discharge current value, and the rotation drive control unit is configured to detect the discharge electrode according to the measured value in the current measuring unit. Since the rotation speed is changed, if the discharge current value is low and the discharge is unstable (condensation is low), the rotation speed is slowed to make condensation easy, and the discharge current value is high and the discharge is unstable. In the case of (condensation is high), the rotational speed can be increased to make it easy to remove excess condensed water by scattering or drying. As a result, the Taylor cone shape is stabilized, so that generation of charged fine particle water can be performed stably. Furthermore, since condensed water gathers rapidly at the tip (discharge part) of the discharge electrode, charged fine particle water can be generated more quickly.

  In the electrostatic atomization apparatus according to the ninth aspect of the present invention, in particular, the electrostatic atomization device further includes a distance measurement unit that measures the distance to the object, and the rotational drive control unit discharges according to the measurement value in the distance measurement unit. Since the rotation speed of the electrode is changed, the charged fine particle water can be scattered according to the position of the object.

  1 to 3 show an electrostatic atomizer which is a first embodiment of the present invention. As shown in FIG. 1, the electrostatic atomizer A includes a Peltier unit 13 that is a water supply unit that supplies water to the discharge electrode 11, and holds the discharge electrode 11 by applying a high voltage to the discharge electrode 11. The rotary drive part 20 which makes the water to be atomized, and rotates the discharge electrode 11 by using the longitudinal axis as the rotation axis 50 is provided. The Peltier unit 13 includes a cooling unit 14 and a heat radiating unit 15, and the discharge electrode 11 is provided on the cooling unit 14 side of the Peltier unit 13 so that water is generated in the discharge electrode 11 based on moisture in the air. Is provided. In addition, a counter electrode 12 that is positioned to face the discharge electrode 11 is provided, and water held by the discharge electrode 11 is atomized by applying a high voltage between the discharge electrode 11 and the counter electrode 12. is there. Further, the discharge electrode 11 includes an airflow generation unit 23 that generates a regulated airflow by the rotation of the discharge electrode 11.

  Furthermore, a rotation drive control unit 31 that controls the rotation of the discharge electrode 11 is provided. The rotation drive control unit 31 controls the discharge electrode 11 after a predetermined time has elapsed since the start of application of a high voltage to the discharge electrode 11. It is intended to rotate. Moreover, the current measurement part 32 which measures a discharge current value is provided, and the rotational drive control part 31 is the discharge electrode 11 when the measured value in the current measurement part 32 is smaller than the predetermined value memorize | stored in the memory | storage part 33 previously. The rotation speed of the discharge electrode 11 is changed according to the measured value in the current measuring unit 32. Moreover, the distance measurement part 34 which measures the distance to a target object is provided, and the rotational drive control part 31 changes the rotational speed of the discharge electrode 11 according to the measured value in the distance measurement part 34. FIG.

  Hereinafter, the electrostatic atomizer of this embodiment will be described in more detail. As shown in FIG. 1, the electrostatic atomizer A includes an electrostatic atomization unit 10, a rotation drive unit 20, a high voltage application unit 30, a rotation drive control unit 31, a current measurement unit 32, a storage unit 33, and a distance measurement unit. 34.

  The electrostatic atomization unit 10 has the discharge electrode 11 standing on the cooling unit 14 of the Peltier unit 13 having the cooling unit 14, the heat radiating unit 15, and the Peltier module 16, and surrounds the side of the discharge electrode 11. The counter electrode 12 is fixed to the edge of the opening end of the holding member 19 having an annular cross section.

  The Peltier unit 13 uses a Peltier module 16 that forms a cooling side and a heat dissipation side when energized. A cooling unit 14 is connected to the cooling side of the Peltier module 16, and a heat dissipation unit is connected to the heat dissipation side of the Peltier module 16. 15 is connected. The cooling unit 14 is made of a material having high thermal conductivity and low electrical conductivity (insulating), and the heat radiating unit 15 is made of a material having high thermal conductivity (for example, aluminum).

  The discharge electrode 11 is a cylindrical member that is erected on the cooling unit 14 and is made of a material having high thermal conductivity and high electrical conductivity (for example, copper) so that its tip has a sharp conical shape. Is formed. The discharge part 11a at the tip of the discharge electrode 11 may be formed in a spherical shape. A high voltage of, for example, about ± 2 to 15 kV is applied to the discharge electrode 11 from the high voltage application unit 30. A voltage sufficiently lower than the high voltage applied to the discharge electrode 11 is applied. The counter electrode 12 may be grounded. At this time, the counter electrode 12 is desirably present for the stabilization of electrostatic atomization, but does not exist if the voltage applied to the discharge electrode 11 is a sufficiently high voltage such as ± 10 kV or more. Also good.

  The principle of generating charged fine particle water is as follows. First, the Peltier module 16 is energized and the discharge electrode 11 is cooled by the cooling unit 14. When the discharge electrode 11 falls below the dew point temperature, moisture in the air begins to condense on the discharge electrode 11. When the condensed water is sufficiently generated in the discharge electrode 11 in this way, a high voltage is applied between the discharge electrode 11 and the counter electrode 12. When a high voltage is applied between the discharge electrode 11 and the counter electrode 12, the dew condensation water generated in the discharge part 11a at the tip of the discharge electrode 11 is charged, and the Coulomb force acts on this dew condensation water. Swells into a cone with a sharp tip (Taylor Cone). At this time, if the applied voltage exceeds the surface tension of water and is a high voltage capable of causing splitting and scattering (Rayleigh splitting), the condensed water generated in the discharge part 11a becomes a Taylor cone shape and becomes a Rayleigh. Electrostatic atomization that causes splitting to generate nanometer-sized charged fine particle water is performed and released into the atmosphere.

  The nanometer-sized charged fine particle water generated in this way is a nanometer-sized charged fine particle water having active species (hydroxy radicals, superoxide, etc.). In addition to being able to remove the odor of the wall surface, clothing, etc. by adhering to the indoor wall surface, clothing, etc., there are allergen removal performance, sterilization performance, etc. in addition to such adhesion deodorization performance.

  In this case, in order to release mist containing negative ions, the counter electrode 12 is grounded, and a negative high voltage is applied to the discharge electrode 11 or a positive high voltage is applied to the counter electrode 12 to discharge the mist. The electrode 11 may be grounded. In order to release mist containing positive ions, the counter electrode 12 is grounded and a positive high voltage is applied to the discharge electrode 11 or a negative high voltage is applied to the counter electrode 12 to discharge the mist. 11 may be grounded.

  In the case of dew condensation due to the Peltier module 16, in order to improve the cooling efficiency of the discharge electrode 11, the heat dissipating part 15 for releasing heat from the surface on the opposite side of the Peltier module 16 has fin-shaped heat dissipating fins 15a. It is desirable that a blower (not shown) for the heat radiating unit 15 exists.

  As shown in FIG. 1, a rotation drive unit 20 is connected to the Peltier unit 13, and the discharge electrode 11 and the Peltier unit 13 can rotate around a rotation shaft 50. The rotational drive unit 20 includes a motor unit 22 that generates rotational power and a rotation support shaft 21 that has a Peltier unit 13 disposed at the tip. Furthermore, the motor unit 22 can start and stop the rotation drive or change the rotation speed according to a signal from the rotation drive control unit 31. The rotation drive control unit 31 starts the rotation drive of the motor unit 22. And stop or rotation speed can be controlled. The rotational power of the motor unit 22 is transmitted to the Peltier unit 13 by the rotation support shaft 21, and the Peltier unit 13 and the discharge electrode 11 rotate. Here, the rotation axis 50 coincides with the longitudinal axis of the discharge electrode 11.

  The counter electrode 12 and the holding member 19 are fixed separately without rotating together with the Peltier unit 13 and the discharge electrode 11. Since the discharge electrode 11 rotates and the counter electrode 12 is fixed, the electric field distribution around the discharge electrode due to variations in the distance between the discharge electrode 11 and the counter electrode 12 caused by dimensional errors and assembly errors of each component is reduced. Uniformity can be eliminated.

  In this embodiment, the electrostatic atomizer A in which the Peltier unit 13 and the discharge electrode 11 are rotated and the counter electrode 12 is fixed is shown. However, the counter electrode 12 is connected to the Peltier unit 13 and the discharge electrode 11. May have another rotation drive unit and rotate. Moreover, only the discharge electrode 11 and the airflow generation part 23 may rotate, and other parts may not rotate. Moreover, the whole electrostatic atomization unit 10 may rotate integrally.

  In addition, the discharge electrode 11 includes an airflow generation unit 23 that can generate an airflow in the scattering direction of the charged fine particle water by the rotation of the base 11b. The airflow generation unit 23 is configured by a plurality of wing-shaped members that can generate an airflow by the rotation of the discharge electrode 11, and is provided around the base 11 b of the discharge electrode 11. When the electrostatic atomization unit 10 is rotated about the rotation shaft 50 by the rotation drive of the motor unit 22, the airflow generation unit 23 is similarly rotated about the rotation shaft 50. Thus, the airflow generation unit 23 can generate an airflow around the discharge electrode 11 in the direction in which the charged fine particle water is scattered. In addition, the airflow generation unit 23 may have a configuration for rotationally driving different from the rotational driving unit 20 that rotates the electrostatic atomization unit, and may be able to rotate independently.

  Further, in the circuit formed by the discharge electrode 11, the counter electrode 12, and the high voltage application unit 30, a current measurement unit 32 that measures the value of the discharge current flowing in the circuit is provided, and the rotation drive control unit 31. Are electrically connected to the high voltage application unit 30 and the ammeter side unit 32. The rotation drive control unit 31 uses the discharge current value measured by the ammeter side unit 32 and the current value that is a threshold value for starting rotation stored in advance in the storage unit 33 to drive the rotation of the rotation drive unit 20. Control.

  As shown in FIG. 2, the value of the discharge current value measured by the ammeter side unit 32 after the rotation drive control unit 31 determines that high voltage application has been started by the high voltage application unit 30 (S100), Comparison is made with a current value that is a threshold value for starting rotation stored in the storage unit 33 in advance (S101). When the measured discharge current value is smaller than the threshold value, the rotation drive control unit 31 performs control to start the rotation drive of the motor unit 22 after a predetermined time has elapsed (S102). Here, by rotating the motor unit 22 after a predetermined time has elapsed, it is possible to prevent the discharge electrode 11 from rotating before condensed water collects in the discharge unit 11a. Thereby, it is possible to eliminate the inhibition of dew condensation on the discharge electrode due to the rotating wind. When the measured discharge current value becomes larger than the threshold value, the rotation drive control unit 31 performs control to stop the rotation drive of the motor unit 22 (S103). Further, when the application of the high voltage is stopped, the rotation drive of the motor unit 22 is stopped (S104), and the process is ended.

  Furthermore, when the motor unit 22 is rotationally driven, the rotation speed of the motor unit 22 can be changed according to the value of the discharge current value measured by the current measuring unit 32 (S105). When the discharge current value is small, it can be determined that the amount of atomization is small and the dew condensation water supplied to the discharge electrode 11 is small. Therefore, the rotation speed is lowered to facilitate condensation, and conversely, the discharge current value is large. Since it can be determined that there is a large amount of condensed water supplied to the discharge electrode 11, the rotational speed is increased to remove excess condensed water supplied to the discharge electrode 11 by scattering or drying.

  Moreover, the electrostatic atomizer A is provided with the distance measurement part 34 which measures the distance to the target object which disperses charged fine particle water. Here, in the case where the electrostatic atomizer A is used indoors, the object is an indoor wall surface, clothing, or the like that can be sterilized or deodorized by activation of charged fine particle water. . The distance measuring unit 34 uses, for example, a distance measuring sensor using infrared rays, and can measure the distance from the electrostatic atomizer A to the indoor wall surface, clothing, and the like. The rotation drive control unit 31 calculates an appropriate rotation speed of the motor unit 22 in order to control the atomization amount of the charged fine particle water according to the distance to the object based on the measurement result signal from the distance measurement unit 34. Then, control is performed by transmitting a control signal to the motor unit 22. When the distance to the object is far, the rotational speed is increased to increase the airflow generated by the airflow generation unit 23 provided around the discharge electrode 11, and the charged fine particle water generated in the discharge unit 11a is It becomes possible to scatter farther. The relationship between the external environment and the optimal divergence amount of the charged fine particle droplet corresponding thereto is stored in the storage unit 33 in advance, and the rotation drive control unit 31 determines the control contents by referring to the relationship. You can also

  Therefore, the discharge electrode 11 can be rotated by including the rotation drive unit 20 that rotates the discharge electrode 11 about the longitudinal axis as the rotation axis. By rotating the discharge electrode 11, it is possible to eliminate non-uniformity of the electric field distribution around the discharge electrode 11 due to variations in the dimensional accuracy and position accuracy of the discharge electrode 11 caused by dimensional errors and assembly errors of each component. By making the electric field distribution around the discharge electrode 11 uniform, the water supplied to the tip of the discharge electrode 11 is charged, and the shape of the raised cone (Taylor cone shape) is stabilized. Generation of fine particle water can be performed more promptly and stably.

  In addition, since water is generated in the discharge electrode 11 based on the moisture in the air using the Peltier unit 13, the water is quickly collected in the discharge part 11 a at the tip of the discharge electrode 11, so that charged fine particle water is generated. Can be performed more quickly.

  Further, by providing the counter electrode 12, the electric field strength is increased, so that the Taylor cone shape is further stabilized and the generation of charged fine particle water can be stably performed. Further, when the Peltier unit 13 is used as the water supply means, the water is more quickly collected in the discharge part 11a at the tip of the discharge electrode 11 due to the electric field strength, so that the charged fine particle water can be generated more quickly. it can.

  Furthermore, by providing the air flow generation unit 23, it is possible to generate an air flow in the scattering direction of the charged fine particle water. Thereby, the charged fine particle water can be scattered further.

  And since the rotation drive control part 31 which controls the rotation of the discharge electrode 11 is provided, rotation can be started and stopped, or the rotation speed can be changed, and the discharge electrode 11 can be appropriately rotated according to the situation. Can do.

  In addition, by providing a rotation drive control unit 31 that rotates the discharge electrode 11 after a predetermined time has elapsed since the start of application of a high voltage to the discharge electrode 11, condensed water is supplied to the discharge unit 11a at the tip of the discharge electrode. It is possible to prevent the discharge electrode 11 from rotating before gathering. This eliminates the inhibition of dew condensation caused by the rotating wind, and the stable dew condensation water quickly gathers at the discharge part 11a at the tip of the discharge electrode 11, so that charged fine particle water can be generated more quickly.

  The rotation drive control unit 31 further includes a current measurement unit 32 that measures a discharge current value. The rotation drive control unit 31 performs discharge when the discharge current value in the current measurement unit 32 is smaller than a predetermined value stored in the storage unit 33 in advance. Since the electrode 11 is rotated, it can be rotated only when the discharge current value is low and the discharge is unstable. As a result, the energy efficiency consumed can be increased without using unnecessary power. Further, since the rotation drive control unit 31 changes the rotation speed of the discharge electrode 11 in accordance with the discharge current value in the current measurement unit 32, the discharge current value is low and the discharge is unstable (condensation is small). ) To reduce condensation and make it easy to condense. If the discharge current value is high and the discharge is unstable (condensation is high), increase the rotation speed to prevent excess condensation from splashing or drying. It can be easily removed. As a result, the Taylor cone shape is stabilized, so that generation of charged fine particle water can be performed stably. Furthermore, since condensed water gathers quickly in the discharge part 11a, generation | occurrence | production of charged fine particle water can be performed more rapidly.

  Furthermore, since the distance measurement part 34 which measures the distance to a target object is further provided and the rotational drive control part 31 changes the rotational speed of the discharge electrode 11 according to the measured value in the distance measurement part 34, it is. The charged fine particle water can be scattered according to the position of the object.

  FIG. 3 shows an electrostatic atomizer that is a second embodiment of the present invention. Here, only matters different from those in the first embodiment will be described, and other matters (configuration, operational effects, and the like) are the same as those in the first embodiment, and thus description thereof will be omitted.

  As shown in FIG. 3, the electrostatic atomization unit 10 uses a suction type in which the liquid to be atomized is stored in the water storage unit 17 in advance and the liquid is supplied from the water storage unit 17 to the discharge electrode 11. Is. In this case, a cavity having a circular cross section or an elliptical cross section is formed inside the discharge electrode 11, and this cavity is used as a discharge portion at the tip of the discharge electrode 11 by utilizing hydrohead pressure or capillary phenomenon. The liquid is conveyed to 11a. In this case, the lower end of the discharge electrode 11 is directly inserted into the water reservoir 17. In addition, it is good also as a structure which supplies a liquid to the discharge electrode 11 from the water storage part 17 through the liquid supply member (not shown) which is another member. In this case, a porous member such as a ceramic or a felt material can be used as the liquid supply member, and liquid supply utilizing a capillary phenomenon can be performed.

It is a block block diagram which shows the structure of the electrostatic atomizer which is 1st Embodiment of this invention. It is a flowchart of the determination process of the start and stop of the rotational drive in the electrostatic atomizer. It is a block block diagram which shows the structure of the electrostatic atomization unit and rotation drive part in the electrostatic atomizer which is the 2nd Embodiment of this invention. It is sectional drawing of the electrostatic atomizer which is a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS A Electrostatic atomizer 10 Electrostatic atomization unit 11 Discharge electrode 12 Counter electrode 13 Peltier unit 14 Cooling part 15 Heat radiation part 15a Heat radiation fin 16 Peltier module 17 Water storage part 19 Holding member 20 Rotation drive part 21 Rotation support shaft 22 Motor part 30 High voltage application unit 31 Rotation drive control unit 32 Ammeter side unit 33 Storage unit 34 Distance measurement unit 50 Rotating shaft

Claims (9)

  In an electrostatic atomizer equipped with water supply means for supplying water to the discharge electrode and atomizing the water held by the discharge electrode by applying a high voltage to the discharge electrode, the discharge electrode is rotated about its longitudinal axis. An electrostatic atomizer comprising a rotation drive unit that rotates as a shaft.   The water supply means is a Peltier unit having a cooling part and a heat radiating part, and a discharge electrode is provided on the cooling part side of the Peltier unit so that water is generated in the discharge electrode based on moisture in the air. The electrostatic atomizer according to claim 1.   A counter electrode positioned opposite to the discharge electrode is provided, and water held by the discharge electrode is atomized by applying a high voltage between the discharge electrode and the counter electrode. Item 3. The electrostatic atomizer according to Item 1 or 2.   The electrostatic atomizer according to any one of claims 1 to 3, wherein the discharge electrode includes an airflow generation unit that generates a regulated airflow by rotation of the discharge electrode.   The electrostatic atomizer according to any one of claims 1 to 4, further comprising a rotation drive control unit that controls rotation of the discharge electrode.   The electrostatic atomizer according to claim 5, wherein the rotation drive control unit rotates the discharge electrode after a predetermined time has elapsed since the start of application of a high voltage to the discharge electrode.   A current measurement unit that measures the discharge current value is provided, and the rotation drive control unit rotates the discharge electrode when the measurement value in the current measurement unit is smaller than a predetermined value stored in the storage unit in advance. The electrostatic atomizer of Claim 5 characterized by these.   The static measurement device according to claim 5, further comprising a current measurement unit that measures a discharge current value, wherein the rotation drive control unit changes a rotation speed of the discharge electrode according to a measurement value in the current measurement unit. Electric atomizer.   The distance measuring unit for measuring the distance to the object is provided, and the rotation drive control unit changes the rotation speed of the discharge electrode according to the measurement value in the distance measuring unit. Electrostatic atomizer.

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