WO2007111121A1 - dispositif d'atomisation électrostatique - Google Patents

dispositif d'atomisation électrostatique Download PDF

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Publication number
WO2007111121A1
WO2007111121A1 PCT/JP2007/054908 JP2007054908W WO2007111121A1 WO 2007111121 A1 WO2007111121 A1 WO 2007111121A1 JP 2007054908 W JP2007054908 W JP 2007054908W WO 2007111121 A1 WO2007111121 A1 WO 2007111121A1
Authority
WO
WIPO (PCT)
Prior art keywords
discharge electrode
high voltage
electrostatic atomizer
negative
mist
Prior art date
Application number
PCT/JP2007/054908
Other languages
English (en)
Japanese (ja)
Inventor
Hiroshi Suda
Takayuki Nakada
Masaharu Machi
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
Priority claimed from JP2006092198A external-priority patent/JP4645503B2/ja
Priority claimed from JP2006092197A external-priority patent/JP4645502B2/ja
Application filed by Matsushita Electric Works, Ltd. filed Critical Matsushita Electric Works, Ltd.
Publication of WO2007111121A1 publication Critical patent/WO2007111121A1/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
    • B05B5/0255—Discharge apparatus, e.g. electrostatic spray guns spraying and depositing by electrostatic forces only
    • 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
    • B05B5/16—Arrangements for supplying liquids or other fluent material
    • B05B5/1691—Apparatus to be carried on or by a person or with a container fixed to the discharge device

Definitions

  • the present invention relates to an electrostatic atomizer that discharges a mist of negatively charged liquid fine particles, and more specifically, an electrostatic atomizer that can stably provide a negatively charged mist to a target space. It is about.
  • JP-A-2005-131549 discloses an electrostatic atomizer that generates negatively charged fine particle water mist by electrostatically atomizing water.
  • the water supplied to the discharge electrode forms a tiller cone at the tip of the discharge electrode, which causes the Rayleigh splitting to atomize and atomize the nanometer order negative ion charged fine particle water.
  • Mist negative ion mist
  • This mist contains radicals and has a long life, can diffuse a large amount into the space, adheres to and penetrates the objects present in the release space, and effectively sterilizes and deodorizes. Can do.
  • the present invention has been invented in view of the above problems, and can negatively charge fine particle mist stably over a long period of time without being affected by the negative charge remaining in the target space.
  • An object of the present invention is to provide an electrostatic atomizer.
  • An electrostatic atomizer includes a discharge electrode and a liquid for supplying a liquid to the discharge electrode.
  • a feature of the present invention is that it includes a controller that controls a high voltage source so that a high voltage of a negative potential is intermittently applied to the discharge electrode. For this reason, during the rest period in which no negative potential is applied to the discharge electrode, negative charges existing in the target space are spontaneously discharged, and negatively charged fine particle mist can be stably discharged over a long period of time.
  • the electrostatic atomizer of the present invention is provided with humidity detecting means for detecting the ambient absolute humidity.
  • the controller applies a negative potential as the absolute humidity increases.
  • the ratio of the idle period during which no negative potential is applied is configured to be small.
  • the negative charge existing in the target space increases the amount of spontaneous discharge per unit time as the absolute humidity rises.Therefore, depending on the situation of the target space, the negative charge fine particle mist is set to the optimum value for the rest period. It can be generated efficiently.
  • the controller may be configured to alternately repeat a first operation mode in which the discharge electrode has a negative potential and a second mode in which the discharge electrode has a positive potential. In this case, by discharging the positively charged charged fine particles during the rest period in which no negative potential is applied, the negative charge existing in the target space can be neutralized, and the discharge of the negatively charged fine particle mist is stabilized. Can continue.
  • the electrostatic atomizer of the present invention may include an ionization needle to which a positive potential is applied.
  • the controller is configured to generate a positive ion from the tip of the ionization needle by applying a high voltage to the ionization needle during a period when the discharge electrode is not applied negatively, and exists in the target space. Neutralize negative charges and release stable negative charged mist.
  • the ratio of the period during which positive ions are released from the discharge electrode ionization needle to the operation period during which negative charged fine particle mist is generated is set smaller by the controller as the absolute humidity increases. It is preferable.
  • FIG. 1 is a schematic diagram showing an electrostatic atomizer according to an embodiment of the present invention.
  • FIG. 2 is an explanatory view showing one usage pattern of the electrostatic atomizer.
  • FIG. 3 is an explanatory diagram showing the operation of the electrostatic atomizer described above.
  • FIG. 4 is a perspective view of the electrostatic atomizer described above.
  • FIG. 5 is a perspective view with the cover removed.
  • FIG. 6 is an explanatory view showing the operation in a modified embodiment of the electrostatic atomizer.
  • FIG. 7 is a schematic view showing an electrostatic atomizer according to another embodiment of the present invention.
  • FIG. 8 is an explanatory view showing the operation of the electrostatic atomizer described above.
  • the electrostatic atomizer according to the present invention generates a mist in which negatively charged fine particles of nanometer order and negatively charged fine particles of micron order are mixed. By discharging this mist to the target space, the target is obtained. It is used to deodorize, sterilize, and decompose substances present in the space and to provide appropriate humidity.
  • the active species contained in nanometer-order negatively charged fine particle mist sterilize food and decompose harmful substances attached to food.
  • the freshness is maintained by keeping the humidity in the storage 90 at an appropriate value with minus-charged fine particle mist of micron order.
  • an electrostatic atomizer includes a foggy horned nose 10 whose tip is a discharge electrode 20, and a counter electrode disposed to face the discharge electrode 20. 30, a high voltage source 60 that applies a high voltage between the discharge electrode 20 and the counter electrode 30, and a controller 70 that controls the value of the high voltage.
  • a pressure tank 40 is connected to the rear end of the atomization nozzle 10, and a liquid, for example, water stored in the pressure tank 40 is supplied to the tip of the discharge electrode 20 through the atomization nozzle 10.
  • This pressurized tank 40 forms a liquid supply means for supplying liquid to the discharge electrode 20.
  • the electrostatic atomizer of the present invention can use various liquids in addition to water, but in the present embodiment, description will be made based on an example in which water is used as the liquid.
  • the water supplied to the tip of the discharge electrode 20 becomes a liquid ball due to surface tension, and by applying a high voltage, for example, a negative potential of 8 kV, to the discharge electrode 20, the discharge end at the tip of the discharge electrode 20 and the counter electrode A high voltage electric field is generated between 30 and this liquid ball is charged with static electricity, Discharged from the tip of the discharge electrode as mist M of charged fine particles of water charged negatively.
  • a high voltage is applied between the discharge electrode 20 and the counter electrode 30
  • a Coulomb force acts between the water held at the tip of the discharge electrode 20 and the counter electrode 30, and the surface of the water is localized.
  • the tiller cone TC is formed.
  • the electric charge is concentrated at the tip of the tiller cone TC, and the electric field strength in this portion increases, and the Coulomb force generated in this portion increases, and the tiller cone TC is further grown.
  • the tiller cone repeats splitting (Rayleigh splitting), generating a large amount of nanometer-order charged fine particle water mist. This mist is released in such a way that it passes through the counter electrode 30 in the air flow caused by the ion wind flowing from the discharge electrode 20 toward the counter electrode 30.
  • the atomizing nozzle 10 is formed of a tubular body, and the tip portion forming the discharge electrode 20 becomes a capillary tube, and the inner diameter of the portion from the pressure tank 40 at the rear end to the discharge electrode 20 at the tip causes capillary action. It is set so as not to rub, and the water head pressure acts on the liquid droplets of water supplied to the tip of the discharge electrode 20.
  • the inner diameter of the atomizing nozzle 10 gradually decreases toward the tip portion that becomes a capillary, and water becomes a liquid ball due to surface tension at the tip of the discharge electrode that is a capillary.
  • This hydraulic head pressure is set to a value that does not hinder the formation of liquid balls due to surface tension, and this hydraulic head pressure acts on the tiller cone TC that is formed when a high voltage is applied.
  • the force that maintains the shape of the Tiller Cone TC by the surface tension is applied to the Tiller Cone TC
  • the Tiller Cone can be applied to the surface other than the most advanced surface where charges are concentrated by applying a high voltage. A part of the surface is torn, splits and scatters. In other parts of the tiller cone, the charge is not concentrated as much as the leading edge, so the energy that breaks up the water is also reduced, and as a result, negatively charged fine particle mist of the order of microns is generated. . Therefore, pressurized water is supplied to the tip of the discharge electrode 20.
  • the nanometer-order negatively charged fine particle mist contains active species (radicals), and these radicals sterilize and deodorize substances present in the space or decompose harmful substances. Micron-order negatively charged fine particles are diffused into the space and humidified
  • the nanometer order is a range of 3 nm or more and lOOnm or less
  • the micron order is a range of more than 0.1 / im and 10 ⁇ or less.
  • the controller 70 is configured to intermittently generate mist of negative charged fine particles from the tip of the discharge electrode 20, and the power switch 94 is turned on. As shown in FIG. 3, the controller 70 alternately repeats the operation period T1 in which the high voltage V1 having a negative potential is applied to the discharge electrode 20 and the pause period T2 in which no voltage is applied. During the rest period T2, the release of mist of negatively charged fine particles is interrupted, so that negative charges attached to the wall surface of the target space and the surface of the substance in the target space are extinguished by natural discharge.
  • the tiller cone formed at the tip of the discharge electrode 20 can maintain a stable shape that is not affected by a strong negative charge from the target space, and the mist of the negatively charged fine particles can be stably maintained over a long period of time. Can be released into the target space.
  • the operation period Tl and the pause time T2 are appropriately set so that the negative charge in the target space disappears to such an extent that the shape of the tiller cone does not become unstable due to natural discharge during the pause period.
  • Tl / T2 ⁇ 6/1 .
  • the electrostatic atomizer of the present embodiment is provided with a humidity sensor 72 that is a humidity detecting means for detecting the absolute humidity in the target space, and the controller 70 operates as the absolute humidity increases. It is configured to reduce the ratio of the rest period ⁇ 2 to the period T1.
  • a humidity sensor 72 that is a humidity detecting means for detecting the absolute humidity in the target space
  • the controller 70 operates as the absolute humidity increases. It is configured to reduce the ratio of the rest period ⁇ 2 to the period T1.
  • each component constituting the electrostatic atomizer is incorporated in the housing 100.
  • the housing 100 includes a base 110 and a cover 120 covering the base 110, and an atomizing nozzle 10, a replenishing tank 50, and a pump 52, which are integrated with the pressurized tank 40, are attached to the base 110.
  • the discharge electrode 20 and the counter electrode 30 are exposed to the outside of the housing 100.
  • the electrical components constituting the high-voltage power supply 60 and the controller 70 are accommodated in the housing 100.
  • a window 122 is formed on the cover 120, and the water level in the replenishing tank 50 formed of a transparent material can be confirmed through the window 122.
  • the supply tank 50 is provided with a cap 54 to add water as needed.
  • the force shown in the example in which the counter electrode 30 is provided in front of the discharge electrode 20 and a high voltage is applied between the discharge electrode 20 and the counter electrode 30 is not necessarily limited to the present invention.
  • the electrostatic atomizer of the present invention when incorporated in a food storage 90 for storing food such as vegetables, it is used as an active species contained in nano-order charged fine particle mist. (Radical) sterilization of food, deodorization, and harmful substances such as agricultural chemicals contained in food In addition to being decomposed, it is possible to maintain the internal humidity at an appropriate level with micron-order charged fine particle mist.
  • freshness of the vegetables can be maintained by supplying a large amount of micron-order charged fine particles into the vegetable tissue through the pores of the vegetables.
  • the food storage 90 includes a temperature adjusting unit 92 for maintaining the inside at a predetermined temperature, and a power switch 94 and a temperature adjusting button 95 are provided on the outer surface.
  • the electrostatic atomizer is operated by a power switch 94, and charged particles mist of nanometer order and charged particle mist of micron order are discharged into the storage chamber 91.
  • leafy vegetables cannot maintain their freshness by simply humidifying the surface of the leaves, but can maintain freshness by supplying moisture into the leaf tissue from the pores of the leaves.
  • the stomata of leafy vegetables is about 100-200111 on the long side and about 10 ⁇ on the short side.
  • Nanometer-order charged fine particles can penetrate into leaf tissue from leafy vegetable pores
  • Nanometer-order charged fine particle mist has a very small particle size, so the amount of water necessary to maintain the freshness of leafy vegetables Insufficient supply inside the organization.
  • micron-order charged microparticles retain more water than nanometer-order charged microparticles mist, so that a sufficient amount of water can be replenished by entering the leaf tissue through the pores. Can maintain freshness.
  • the peak of the particle size distribution of the number of generation of micron-order charged fine particles is ⁇ ⁇ ⁇ or less, preferably 0.5 / im to 1.5 / Adjust the applied pressure and applied voltage so as to be im.
  • Nanometer-order charged fine particle mist sterilizes and deodorizes the surface of leafy vegetables and removes harmful substances such as pesticides adhering to leafy vegetables from the pores. Can be sterilized, deodorized in the tissue, and decomposed inside the pesticides.
  • the particle size distribution peak of the number of charged fine particle mist of nanometer order is 3 nm to 50 nm. Adjust the applied pressure and applied voltage so that
  • FIG. 6 shows a modification of the above-described embodiment.
  • Controller 70 is configured to release positively charged particulate mist.
  • the counter electrode 30 is set to the ground potential (0 V) during the operation period T1 and the rest period T2, and positive and negative high voltages are alternately applied to the discharge electrode 20.
  • the positively charged fine particles generated during the rest period T2 neutralize the negative charge remaining in the target space S, so that a mist of negatively charged fine particles is released into the target space over a long period of time.
  • FIG. 7 shows an electrostatic atomizer according to a second embodiment of the present invention.
  • This electrostatic atomizer has basically the same configuration as that of the first embodiment except that an ionization needle 80 that emits positive ions is added to the target space S, and the same members have the same numbers. Indicated by
  • a positive voltage of about +8 kV is applied to the ionization needle 40 from a high voltage source 62 provided separately from the high voltage source 60 for applying a negative voltage to the discharge electrode 20 under the control of the controller 70.
  • the controller 70 applies a negative high voltage VI to the discharge electrode 20 during the operation period T1 to generate mist of negatively charged fine particles, and during the rest period T2, the ionization needle 80 Apply positive voltage V2 of Heplus potential to generate positive ions. Since these positive ions neutralize the negative charge remaining in the target space S, a mist of negatively charged fine particles is continuously generated.
  • the high voltage applied to the ionization needle 80 can be taken out from the high voltage source 60 without using another high voltage source 62.
  • the humidity sensor 72 that detects the absolute humidity of the target space S is used, and the controller 70 reduces the ratio of the pause period T2 to the operation period T1 as the absolute humidity increases. Composed.
  • an optimum static elimination effect can be obtained according to the humidity condition of the target space.
  • the neutralization of positive ions can be effectively combined with the neutralization of positive ions by utilizing the fact that spontaneous discharge of negative charges remaining in the target space is promoted when the humidity in the target space increases.
  • various types of humidity sensor 72 can be applied. For example, it is acceptable to use an object that calculates the absolute temperature from the temperature and relative humidity in the target space S. Also electrostatic The absolute temperature is changed from the relative temperature on the condition that the target space S is maintained at a substantially constant temperature as in the case where the atomizer is used for a device that is maintained at a constant temperature such as a food storage.
  • the detection format can be used. Further, a type that detects the absolute temperature from the temperature can be used as long as the target space S is maintained at a substantially constant humidity.
  • the electrostatic atomizer of the present invention is used in the food storage 90 is illustrated, but other than this, for example, it can be applied to a washing machine, a clothes dryer, and a tableware dryer. Is possible.
  • the force showing the configuration for generating negatively charged fine particle mist of nanometer order and negatively charged fine particle mist of micron order from the discharge electrode 20 The present invention is not necessarily limited to this. A configuration that generates only nanometer-order charged fine particle mist may be adopted.
  • the liquid to be electrostatically atomized in addition to water, for example, a liquid made of an antibacterial agent or a disinfectant can be used.

Landscapes

  • Electrostatic Spraying Apparatus (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)

Abstract

Selon l'invention, une tension élevée est appliquée à un liquide injecté sur une électrode émissive, pour de ce fait charger le liquide en négatif, de sorte que le nuage de fines particules chargées en négatif est libéré depuis l'électrode émissive dans un espace cible. Une tension élevée en négatif est appliquée de manière intermittente à l'électrode émissive, et la charge en négatif laissée dans l'espace cible est éliminée pendant une période de repos sans application de potentiel en négatif, de sorte que le nuage de fines particules chargées en négatif est libéré en permanence dans l'espace cible.
PCT/JP2007/054908 2006-03-29 2007-03-13 dispositif d'atomisation électrostatique WO2007111121A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2006-092198 2006-03-29
JP2006092198A JP4645503B2 (ja) 2006-03-29 2006-03-29 静電霧化装置
JP2006-092197 2006-03-29
JP2006092197A JP4645502B2 (ja) 2006-03-29 2006-03-29 静電霧化装置

Publications (1)

Publication Number Publication Date
WO2007111121A1 true WO2007111121A1 (fr) 2007-10-04

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TW (1) TWI324088B (fr)
WO (1) WO2007111121A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2226127A1 (fr) * 2007-12-25 2010-09-08 Panasonic Electric Works Co., Ltd Appareil de génération de particules fines d'oxydation et de réduction
WO2011136044A1 (fr) * 2010-04-30 2011-11-03 パナソニック電工株式会社 Dispositif de pulvérisation électrostatique
JP2012075483A (ja) * 2010-09-30 2012-04-19 Panasonic Corp イオン発生装置、及びこれを備えた電気機器
WO2013031357A1 (fr) * 2011-08-30 2013-03-07 シャープ株式会社 Dispositif émetteur d'ions, ainsi que climatiseur et appareil de coiffure dotés de celui-ci
WO2013031472A1 (fr) * 2011-08-31 2013-03-07 シャープ株式会社 Dispositif de climatisation
WO2013047168A1 (fr) * 2011-09-30 2013-04-04 パナソニック株式会社 Dispositif d'atomisation électrostatique
CN104748144A (zh) * 2015-03-11 2015-07-01 江苏大学 一种气液同轴喷射的液态燃料静电雾化喷嘴
CN111542398A (zh) * 2017-12-29 2020-08-14 萨诺科技360有限责任公司 静电喷涂机

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6902721B2 (ja) * 2018-08-29 2021-07-14 パナソニックＩｐマネジメント株式会社 電圧印加装置及び放電装置

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Publication number Priority date Publication date Assignee Title
JPH0587018A (ja) * 1991-03-01 1993-04-06 Robert Bosch Gmbh 液体の静電式霧化装置
JPH0760166A (ja) * 1993-08-24 1995-03-07 Sanden Corp 液体噴霧装置
JP2001096201A (ja) * 1999-09-30 2001-04-10 Trinity Ind Corp 静電塗布装置
JP2003144985A (ja) * 2001-11-16 2003-05-20 Nippon Parkerizing Co Ltd 粉体塗装装置及び方法
JP2004165587A (ja) * 2002-02-21 2004-06-10 National Institute Of Advanced Industrial & Technology 超微細流体ジェット装置
JP2005164139A (ja) * 2003-12-03 2005-06-23 Matsushita Electric Ind Co Ltd 加湿器

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0587018A (ja) * 1991-03-01 1993-04-06 Robert Bosch Gmbh 液体の静電式霧化装置
JPH0760166A (ja) * 1993-08-24 1995-03-07 Sanden Corp 液体噴霧装置
JP2001096201A (ja) * 1999-09-30 2001-04-10 Trinity Ind Corp 静電塗布装置
JP2003144985A (ja) * 2001-11-16 2003-05-20 Nippon Parkerizing Co Ltd 粉体塗装装置及び方法
JP2004165587A (ja) * 2002-02-21 2004-06-10 National Institute Of Advanced Industrial & Technology 超微細流体ジェット装置
JP2005164139A (ja) * 2003-12-03 2005-06-23 Matsushita Electric Ind Co Ltd 加湿器

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2226127A1 (fr) * 2007-12-25 2010-09-08 Panasonic Electric Works Co., Ltd Appareil de génération de particules fines d'oxydation et de réduction
EP2226127A4 (fr) * 2007-12-25 2013-11-06 Panasonic Corp Appareil de génération de particules fines d'oxydation et de réduction
WO2011136044A1 (fr) * 2010-04-30 2011-11-03 パナソニック電工株式会社 Dispositif de pulvérisation électrostatique
JP2011229818A (ja) * 2010-04-30 2011-11-17 Panasonic Electric Works Co Ltd 静電霧化装置
CN102844052A (zh) * 2010-04-30 2012-12-26 松下电器产业株式会社 静电雾化装置
EP2564879A4 (fr) * 2010-04-30 2013-03-06 Panasonic Corp Dispositif de pulvérisation électrostatique
EP2564879A1 (fr) * 2010-04-30 2013-03-06 Panasonic Corporation Dispositif de pulvérisation électrostatique
US8471216B2 (en) 2010-04-30 2013-06-25 Panasonic Corporation Electrostatic atomizing device
JP2012075483A (ja) * 2010-09-30 2012-04-19 Panasonic Corp イオン発生装置、及びこれを備えた電気機器
JP2013048700A (ja) * 2011-08-30 2013-03-14 Sharp Corp イオン送出装置及びそれを備えた空気調節装置、理美容機器
WO2013031357A1 (fr) * 2011-08-30 2013-03-07 シャープ株式会社 Dispositif émetteur d'ions, ainsi que climatiseur et appareil de coiffure dotés de celui-ci
JP2013050288A (ja) * 2011-08-31 2013-03-14 Sharp Corp 空気調和装置
WO2013031472A1 (fr) * 2011-08-31 2013-03-07 シャープ株式会社 Dispositif de climatisation
WO2013047168A1 (fr) * 2011-09-30 2013-04-04 パナソニック株式会社 Dispositif d'atomisation électrostatique
JP2013075265A (ja) * 2011-09-30 2013-04-25 Panasonic Corp 静電霧化装置
CN103781555A (zh) * 2011-09-30 2014-05-07 松下电器产业株式会社 静电雾化装置
EP2762236A1 (fr) * 2011-09-30 2014-08-06 Panasonic Corporation Dispositif d'atomisation électrostatique
EP2762236A4 (fr) * 2011-09-30 2015-03-25 Panasonic Corp Dispositif d'atomisation électrostatique
CN104748144A (zh) * 2015-03-11 2015-07-01 江苏大学 一种气液同轴喷射的液态燃料静电雾化喷嘴
CN111542398A (zh) * 2017-12-29 2020-08-14 萨诺科技360有限责任公司 静电喷涂机

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TWI324088B (en) 2010-05-01
TW200800405A (en) 2008-01-01

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