WO2006093190A1 - Atomiseur electrostatique - Google Patents

Atomiseur electrostatique Download PDF

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Publication number
WO2006093190A1
WO2006093190A1 PCT/JP2006/303875 JP2006303875W WO2006093190A1 WO 2006093190 A1 WO2006093190 A1 WO 2006093190A1 JP 2006303875 W JP2006303875 W JP 2006303875W WO 2006093190 A1 WO2006093190 A1 WO 2006093190A1
Authority
WO
WIPO (PCT)
Prior art keywords
discharge
discharge electrode
electrode
water
condensed water
Prior art date
Application number
PCT/JP2006/303875
Other languages
English (en)
Japanese (ja)
Inventor
Shousuke Akisada
Sumio Wada
Toshihisa Hirai
Akihide Sugawa
Atsushi Isaka
Tatsuhiko Matsumoto
Kentaro Kobayashi
Original Assignee
Matsushita Electric Works, Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Works, Ltd. filed Critical Matsushita Electric Works, Ltd.
Publication of WO2006093190A1 publication Critical patent/WO2006093190A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
    • B05B5/057—Arrangements for discharging liquids or other fluent material without using a gun or nozzle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
    • B05B5/053—Arrangements for supplying power, e.g. charging power
    • B05B5/0531—Power generators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
    • B05B5/053—Arrangements for supplying power, e.g. charging power
    • B05B5/0533—Electrodes specially adapted therefor; Arrangements of electrodes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F6/00—Air-humidification, e.g. cooling by humidification
    • F24F6/12—Air-humidification, e.g. cooling by humidification by forming water dispersions in the air

Definitions

  • the present invention relates to an electrostatic atomizer, and more particularly to an electrostatic atomizer for generating nano-sized mist.
  • the charged fine particle water contains radicals and has a long life, and can be diffused in a large amount into the space.
  • the charged fine particle water adheres to an indoor wall, clothes, curtains, etc. It has the characteristics that it works effectively and can be made non-brominated.
  • Patent Document 1 Japanese Patent No. 3260150
  • the present invention has been invented in view of the above-described conventional problems, and does not require the trouble of replenishing water and can provide a stable discharge state for the generation of nano-size mist.
  • An object of the present invention is to provide an electrostatic atomizer.
  • the electrostatic atomizing device generates water on the discharge electrode as condensed water by cooling the discharge electrode with a cooling means.
  • the control means monitors the discharge state between the discharge electrode and the counter electrode.
  • the cooling means by controlling the cooling means and determining the generation of condensed water according to the discharge current value, the generation of condensed water and the atomization by discharge are stabilized from the beginning of operation.
  • control means determines the cooling capacity of the cooling means in the non-normal time in the initial stage of operation based on the environmental temperature, it stabilizes the time required until condensed water is generated. Can power s.
  • control means performs the determination of the generation of condensed water based on the discharge current value while gradually increasing the cooling capacity of the cooling means in the non-normal time at the start of operation, the humidity is low. However, it can shorten the time it takes to generate condensed water.
  • control means one that periodically monitors the discharge current from the start of operation and determines the generation of condensed water can be used, and the discharge is performed until a predetermined time elapses from the start of operation. It is also possible to use a system in which the discharge is performed when the predetermined time has elapsed and the generation of condensed water is determined based on the discharge current value at this time.
  • water for electrostatic atomization is generated on the discharge electrode as dew condensation water, and this is electrostatically atomized.
  • the generation of size mist can be performed quickly, and the cooling means is controlled according to the discharge current value, so that the generation of condensed water and the atomization by discharge are continuously performed stably.
  • the control until the formation of condensed water at the initial stage of the operation is performed based on the discharge current value, the control of the discharge and the cooling at the initial stage of the operation can be easily performed.
  • FIG. 1 is a circuit diagram of an example of an embodiment of the present invention.
  • FIG. 2 is a block circuit diagram of the above.
  • FIGS. 3 (a), 3 (b), and 3 (c) are explanatory views showing the state of a tailor cone formed with condensed water on the discharge electrode during discharge.
  • FIG. 4 is an explanatory diagram regarding the discharge current feedback.
  • FIG. 5 is a flowchart showing an operation at the initial stage of operation.
  • FIG. 6 is a characteristic diagram of applied voltage and electrode cooling temperature of the Peltier module.
  • FIG. 7 is a flowchart showing another operation at the initial stage of operation.
  • the electrostatic atomizer has a required distance between the discharge electrode 2 and one end of the discharge electrode 2.
  • the opposite electrode 3 whose inner peripheral edge functions as an actual electrode, the high-voltage power source 4 that applies a high voltage for discharge between these electrodes 2 and 3, and the other end of the discharge electrode 2 absorbs heat.
  • Peltier module 5 as a cooling means to cool the discharge electrode 2 to a temperature below the dew point, a power supply 6 with a built-in power supply 60 for the Peltier module, and a control circuit C
  • the counter electrode 3 is grounded, and a negative or positive high voltage (for example, 14.6 kV) is applied to the discharge electrode 2 side during discharge.
  • 50 is a heat radiating fin arranged on the heat radiating side of the Peltier module 5
  • 8 is an environmental temperature sensor.
  • the high-voltage power supply unit 4 includes a high-voltage generation circuit 40, a discharge voltage detection circuit 41, and a discharge current detection circuit 42.
  • the detected discharge voltage Vv and discharge current Vi are as described above.
  • the control circuit C adjusts the amount of condensed water generated by adjusting the cooling degree of the Peltier module 5 based on the discharge voltage Vv and the discharge current Vi.
  • the discharge current increases as the tailor cone increases.
  • the discharge current when a discharge voltage of 4.4 kV is applied, the discharge current is 3. ⁇ ⁇ ⁇ in the state shown in Fig. 3 (a), and the discharge current is 6 ⁇ 0 / ⁇ ⁇ ⁇ in the state shown in Fig. 3 (b). In the state shown in FIG. 3 (c), the discharge current was 9. ⁇ A.
  • the shape of the tailor cone is related to the amount of condensed water, and the discharge current also changes from the height of the tailor cone. Therefore, by measuring the discharge current, the height of the tailor cone is (Amount of condensed water) can be known.
  • Amount of condensed water can be known.
  • the amount of condensed water on the discharge electrode 2 is further reduced, a discharge is generated between the discharge electrode 2 and the counter electrode 3 but not in the discharge between the water on the discharge electrode 2 and the counter electrode 3, and ozone is generated. It will cause the occurrence of.
  • the amount of water on the discharge electrode 2 is further increased, the distance between the counter electrode 3 and the water is shortened, a short-circuit current flows, and a mist having a target particle diameter cannot be obtained.
  • the amount of water on the discharge electrode 2 is estimated from the discharge current value at a certain discharge voltage, and the Peltier module 5 which is a cooling means for cooling the discharge electrode 2 based on this estimation.
  • the amount of condensed water generated is adjusted by adjusting the degree of cooling.
  • the applied voltage of the Peltier module 5 is increased to further cool the discharge electrode 2 to increase the amount of condensed water.
  • the amount of condensed water on the discharge electrode 2 is always suitable for the generation of nano-size mist by performing feedback control in a direction that reduces the degree of cooling and reduces condensed water. As a result, electrostatic atomization that generates nano-size mist due to electric discharge is continuously performed without interruption.
  • the feedback control based on the discharge current will be described in detail.
  • the control circuit C discharges from the discharge voltage detection circuit 41 and the discharge current detection circuit 42.
  • the discharge current value upper limit i (n) ma X of the discharge current control based on the above table 1 and the target value (center value) are calculated based on the discharge voltage value obtained by taking in the voltage value and the discharge current value and calculating the average value at regular intervals Value) i (n) typ, lower limit i (n) min, and the applied voltage applied to the Peltier module 5 is reduced so that the measured discharge current i (n) value becomes the target value i (n) typ.
  • the feedback control is performed by the tee control. Here, the following processing is performed to avoid overshoot.
  • the average values v (l) and i (l) of the discharge voltage value and the discharge current value started to be captured at time ta are determined at time tb after At time,
  • a D (n) (a X A id (n) — b X A i (n)) X F ⁇ D (n-1) ⁇
  • This correction function F ⁇ D (1) ⁇ weights the entire duty by having a small value when the duty D (nl) is low and a large value when the duty D (nl) is high. Yes.
  • the control circuit C takes in the environmental temperature measured by the environmental temperature sensor 8 and sets the electrode cooling temperature T corresponding to this environmental temperature as shown in FIG. In other words, if the ambient temperature (room temperature) is 18 ° C, the temperature will be reduced by 19 ° C taking into account the temperature at which water freezes at 1 ° C, and the Peltier voltage applied according to this electrode cooling temperature T is set. Na
  • the Peltier module 5 has the characteristics shown in FIG. 6 as to the electrode cooling temperature T and the applied voltage. The higher the electrode cooling temperature ⁇ , the higher the applied voltage.
  • the control circuit C outputs a duty value for obtaining the applied voltage to the power source 6 to cool the Peltier module 5.
  • the control circuit C starts the discharge by simultaneously operating the high-voltage power supply unit 4 and detects the discharge current by the discharge current detection circuit 42.
  • the control circuit C Until the current value I as a condition for shifting to the feedback control becomes equal to or greater than the constant Iini ( ⁇ ⁇ ), the control circuit C periodically increases the duty value and applies it to the Peltier module 5 By gradually increasing the voltage, processing is also carried out to accelerate the generation of condensed water, and there is no possibility that securing of condensed water will not be delayed when humidity is low.
  • the duty value D (n) becomes D256, which is 100% duty, the state is shifted to the feedback control state.
  • the state in which the high voltage power supply unit 4 is stopped and the voltage marking to the Peltier module 5 is also kept for a certain time,
  • the high-voltage power supply unit 4 and the Peltier module 5 are operated again, and the discharge current value I is measured in this state.
  • the reason for stopping the Peltier module 5 for a certain period of time is to eliminate the possibility that the humidity of the environment is abnormally high, and to wait for the condensed water during the previous operation to run out.
  • the discharge current value I when the discharge and cooling are restarted is lower than a predetermined value Ip (the value of Ip is the same as or slightly larger than Ii ni), water is generated in the discharge electrode 2 and metal discharge occurs. It is determined that the discharge state with water has been reached, and the control proceeds to the feedback control described above. If the discharge current value I is higher than the predetermined value Ip, the high-voltage power supply unit 4 is stopped, and the discharge electrode 2 is cooled in this state with the duty value increased by one or more stages, and a predetermined time has elapsed. For example, the discharge current value I is measured by operating the high-voltage power supply 4 and compared with the predetermined value Ip again until the duty value reaches 100% (D256).
  • the discharge electrode 2 has no water but the discharge current is large, it is considered that the metal discharge has occurred as described above, and the discharge in this state is caused by the deterioration of the discharge electrode 2.
  • the high-pressure discharge is performed only during the measurement of the current value I, which will be repeated periodically.
  • the duty value of the Peltier module 5 gradually increases as described above. If the maximum value is reached, the environment is difficult to generate condensed water, such as low temperature and low humidity.
  • the Peltier module 5 is turned off when it is judged that the condensed water cannot be secured by the cooling capacity of the hull module 5.
  • Fig. 7 shows another example of the control flow at the beginning of operation when the discharge electrode 2 is not cooled.
  • the control circuit C captures the environmental temperature measured by the environmental temperature sensor 8 along with the start of operation. Set the duty value corresponding to the electrode cooling temperature T according to the environmental temperature, start cooling the Peltier module 5 and only cool the discharge electrode 2 with the Peltier module 5 without operating the high voltage power supply 4 After continuing for a while, the high-voltage power supply 4 is activated to start discharging. The discharge is started after waiting for the time when condensed water will be generated, and this time should be 1 minute or more.
  • the discharge current value I at the start of discharge is equal to or greater than the upper limit value Imax, it is determined that there is an abnormality, and as shown in the left flow in FIG.
  • the voltage applied to the Peltier module 5 is stopped for a certain period of time, and then only the discharge due to the operation of the high-voltage power supply unit 4 is resumed, and the discharge current value I is measured in this state. To do.
  • the reason why the Peltier module 5 is stopped for a certain period of time is to eliminate the possibility that the humidity of the environment is abnormally high and to wait for the condensed water during the previous operation to run out.
  • the discharge current value I is equal to or greater than the predetermined value Ip even at this time, it is determined that the metal discharge occurred in the absence of water rather than because the amount of water was large.
  • the discharge is started and the discharge current value I is set again. If this current value I is smaller than the upper limit value Imax, the routine shifts to normal feedback control in the same manner as described above.
  • the Peltier module 5 is turned off in addition to turning off the high-piezoelectric source 4 because it is judged that the current cooling capacity of the Berche module 5 cannot secure dew condensation water.
  • a mode is set in which the operation is started from the beginning after a certain period of time, normal operation will be achieved when the surrounding environment is replaced and the environment where the condensed water can be secured even during continuous operation.
  • the present invention eliminates the need for water replenishment for electrostatic atomization in an electrostatic atomization apparatus for generating nano-size mist, enables generation of nano-size mist quickly, and generates and discharges condensed water. It is possible to apply to any application by making it possible to continuously and stably carry out the atomization by means of, and further to easily control the discharge and cooling at the initial stage of operation.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Dispersion Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrostatic Spraying Apparatus (AREA)

Abstract

La présente invention décrit un atomiseur électrostatique qui comprend une électrode de décharge (2), une contre-électrode (3), une source d'alimentation haute tension (4) pour appliquer une haute tension entre les électrodes, un moyen de refroidissement (5) pour refroidir l'électrode de décharge afin de produire de l'eau sur la partie d'électrode de décharge à partir de l'humidité dans l’air et un moyen de contrôle (C) pour contrôler l'état de décharge entre les électrodes et aligner un état de décharge souhaité. Le moyen de contrôle contrôle le moyen de refroidissement dans un état normal conformément à la valeur du courant de décharge et décide, à partir de la valeur du courant de décharge, si oui ou non l'eau de condensation du point de rosée est produite sur la partie d'électrode de décharge pour effectuer la transition entre l'étape initiale de démarrage des opérations, qui est un temps anormal, à un temps acceptable . L'eau qui doit être atomisée de manière électrostatique est assurée sous forme d'eau de condensation du point de rosée sur l'électrode de décharge. En surveillant l'état de décharge, il est possible de réaliser de manière stable la production de l'eau de condensation du point de rosée et l'atomisation par décharge, et ce à partir de l'étape initiale des opérations.
PCT/JP2006/303875 2005-03-04 2006-03-01 Atomiseur electrostatique WO2006093190A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2005061365A JP4329709B2 (ja) 2005-03-04 2005-03-04 静電霧化装置
JP2005-061365 2005-03-04

Publications (1)

Publication Number Publication Date
WO2006093190A1 true WO2006093190A1 (fr) 2006-09-08

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WO (1) WO2006093190A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2020189A1 (fr) * 2007-07-30 2009-02-04 Matsushita Electric Works, Ltd. Soufflante d'air chaud
EP2211162A1 (fr) * 2007-10-29 2010-07-28 Panasonic Corporation Procede pour analyser l'air expire
EP3626623A1 (fr) * 2018-09-21 2020-03-25 Panasonic Intellectual Property Management Co., Ltd. Systême d'atomisation électrostatique et méthode de détection d'erreur du systême

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4396591B2 (ja) * 2005-07-15 2010-01-13 パナソニック電工株式会社 静電霧化装置
JP5118472B2 (ja) * 2007-12-21 2013-01-16 パナソニック株式会社 静電霧化装置の検査方法およびその装置
JP5336769B2 (ja) * 2008-05-27 2013-11-06 パナソニック株式会社 静電霧化装置の検査方法およびその装置
EP2233212A1 (fr) 2009-03-26 2010-09-29 Panasonic Electric Works Co., Ltd Dispositif d'atomisation électrostatique
JP2012065979A (ja) * 2010-09-27 2012-04-05 Panasonic Corp 機能ミスト発生装置
JP6104640B2 (ja) * 2013-03-01 2017-03-29 住友化学株式会社 静電噴霧装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005028325A (ja) * 2003-07-09 2005-02-03 Matsushita Electric Works Ltd マイナスイオン発生機能付き静電霧化装置及びこれを備えた空気調和機
JP2006068711A (ja) * 2004-09-06 2006-03-16 Matsushita Electric Works Ltd 静電霧化装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005028325A (ja) * 2003-07-09 2005-02-03 Matsushita Electric Works Ltd マイナスイオン発生機能付き静電霧化装置及びこれを備えた空気調和機
JP2006068711A (ja) * 2004-09-06 2006-03-16 Matsushita Electric Works Ltd 静電霧化装置

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2020189A1 (fr) * 2007-07-30 2009-02-04 Matsushita Electric Works, Ltd. Soufflante d'air chaud
EP2211162A1 (fr) * 2007-10-29 2010-07-28 Panasonic Corporation Procede pour analyser l'air expire
EP2211162A4 (fr) * 2007-10-29 2011-08-03 Panasonic Corp Procede pour analyser l'air expire
EP3626623A1 (fr) * 2018-09-21 2020-03-25 Panasonic Intellectual Property Management Co., Ltd. Systême d'atomisation électrostatique et méthode de détection d'erreur du systême
US11285500B2 (en) 2018-09-21 2022-03-29 Panasonic Intellectual Property Management Co., Ltd. Liquid container, and electrostatic atomizing apparatus with liquid container
US11285499B2 (en) 2018-09-21 2022-03-29 Panasonic Intellectual Property Management Co., Ltd. Electrostatic atomizing apparatus and electrostatic atomizing method
US11998941B2 (en) 2018-09-21 2024-06-04 Panasonic Intellectual Property Management Co., Ltd. Electrostatic atomizing system, and method for fault detection in electrostatic atomizing system

Also Published As

Publication number Publication date
JP4329709B2 (ja) 2009-09-09
JP2006239632A (ja) 2006-09-14

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