US20180361009A1 - Indoor air purification apparatus for vehicle using non-thermal plasma - Google Patents

Indoor air purification apparatus for vehicle using non-thermal plasma Download PDF

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Publication number
US20180361009A1
US20180361009A1 US15/781,317 US201615781317A US2018361009A1 US 20180361009 A1 US20180361009 A1 US 20180361009A1 US 201615781317 A US201615781317 A US 201615781317A US 2018361009 A1 US2018361009 A1 US 2018361009A1
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United States
Prior art keywords
indoor air
cleaning device
filter
air cleaning
discharge
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
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US15/781,317
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English (en)
Inventor
Jingyu Kim
Jaeseung JEONG
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Industry Academic Cooperation Foundation of KNU
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Industry Academic Cooperation Foundation of KNU
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Assigned to KYUNGPOOK NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION reassignment KYUNGPOOK NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: JEONG, Jaeseung, KIM, JINGYU
Publication of US20180361009A1 publication Critical patent/US20180361009A1/en
Abandoned legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
    • A61L9/22—Ionisation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/015—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone
    • A61L9/04—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone using substances evaporated in the air without heating
    • A61L9/046—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone using substances evaporated in the air without heating with the help of a non-organic compound
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H3/00—Other air-treating devices
    • B60H3/0071—Electrically conditioning the air, e.g. by ionizing
    • B60H3/0078—Electrically conditioning the air, e.g. by ionizing comprising electric purifying means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H3/00—Other air-treating devices
    • B60H3/06—Filtering
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T19/00—Devices providing for corona discharge
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T19/00—Devices providing for corona discharge
    • H01T19/04—Devices providing for corona discharge having pointed electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T23/00—Apparatus for generating ions to be introduced into non-enclosed gases, e.g. into the atmosphere
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2209/00—Aspects relating to disinfection, sterilisation or deodorisation of air
    • A61L2209/10—Apparatus features
    • A61L2209/11—Apparatus for controlling air treatment
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2209/00—Aspects relating to disinfection, sterilisation or deodorisation of air
    • A61L2209/10—Apparatus features
    • A61L2209/14—Filtering means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2209/00—Aspects relating to disinfection, sterilisation or deodorisation of air
    • A61L2209/10—Apparatus features
    • A61L2209/16—Connections to a HVAC unit
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2209/00—Aspects relating to disinfection, sterilisation or deodorisation of air
    • A61L2209/20—Method-related aspects
    • A61L2209/21—Use of chemical compounds for treating air or the like
    • A61L2209/212—Use of ozone, e.g. generated by UV radiation or electrical discharge

Definitions

  • the present disclosure relates to an indoor air cleaning device for a vehicle using a nonthermal plasma, and more particularly, to an indoor air cleaning device for a vehicle using a nonthermal plasma, in which ozone is generated by a nonthermal plasma through corona discharge and an air purifying filter is sterilized through strong oxidization action of ozone, achieving more hygienic and continuous management, static electricity of the electrostatic filter is recharged with the controlled magnitude of applied voltage to maintain the best purification performance of the filter, and negative ions beneficial for human body are generated, creating pleasant indoor air conditions.
  • the pollution inside the vehicle may be caused by outside source pollution factors such as harmful exhaust gas NOx generated by surrounding vehicles, particulate matter (PM), CO, SOx and HC, and when these materials enter the vehicle, they may harm the driver's health and reduce the concentration level while driving, and eventually, causing accidents.
  • outside pollution factors are caused by microbial materials living in the air conditioner or fibers, tobacco smoke, air freshener, and carbon dioxide released through breathing of the driver or passenger.
  • An air cleaning device usually uses an electrostatic filter as a filter for air purification.
  • electrostatic filter used for a long term, there is an increasing likelihood that many bacteria will grow in the filter and air passages due to humidity and accumulated impurities, the polluted air also will likely be discharged out of the air cleaning device.
  • the electrostatic filter when the electrostatic filter is exposed to the outside for a long term, the surface area of the filter is reduced due to a reduction of static charge electrically charged in the filter and agglomeration phenomena of the filter fibers, and accordingly, the filter effect is drastically reduced. Therefore, in order to maintain the performance of the air cleaning device, it is necessary to periodically replace the filter.
  • the present disclosure is designed to solve the problems described above, and therefore the present disclosure is directed to provide an indoor air cleaning device for a vehicle using a nonthermal plasma, in which ozone is generated by a nonthermal plasma through corona discharge and an air purifying filter is sterilized through strong oxidizing action of ozone, achieving more hygienic and continuous management.
  • the present disclosure is further directed to provide an indoor air cleaning device for a vehicle using a nonthermal plasma, in which an air purifying filter is efficiently sterilized in combination with a corona discharge method of simple structure, static electricity of an electrostatic filter is recharged with the controlled magnitude of applied voltage to maintain the best purification performance of the filter, and negative ions beneficial for human body are generated, creating a pleasant indoor air condition.
  • an indoor air cleaning device for a vehicle using a nonthermal plasma installed inside the vehicle to keep air clean, including an air inlet unit in which when the air is introduced, a filter unit purifies the air, a discharge electrode unit is formed on a front surface of the filter unit, an inductive electrode unit formed on a rear surface of the filter unit, an air outlet unit through which the air purified by the filter unit is discharged to inside the vehicle, and a power control unit which applies voltage to the discharge electrode unit and the inductive electrode unit, wherein ozone is generated through discharge by the discharge electrode unit and the inductive electrode unit, and sterilizes the filter unit.
  • the discharge by the discharge electrode unit and the inductive electrode unit is preferably a corona discharge
  • electrodes of the discharge electrode unit and the inductive electrode unit are made of stainless steel
  • the discharge electrode unit includes one or more wire electrodes
  • the discharge electrode unit preferably includes a maximum of seven wire electrodes
  • the inductive electrode unit includes a mesh electrode
  • the discharge electrode unit and the inductive electrode unit may be formed at a spacing of 22 to 26 mm in this instance.
  • the power control unit allows a user to adjust the magnitude of voltage applied to the discharge electrode unit and the inductive electrode unit, and operation may be performed stepwise in an electrostatic charging mode, a negative ion generation mode and an ozone sterilization mode according to the magnitude of voltage adjusted by the power control unit.
  • a mode selection button is preferably provided to allow a user to adjust the magnitude of voltage.
  • FIG. 1 is a configuration diagram of an indoor air cleaning device for a vehicle using a nonthermal plasma according to an embodiment of the present disclosure.
  • FIG. 2A is a diagram showing reduced static electricity in fibers of a filter unit in an indoor air cleaning device for a vehicle using a nonthermal plasma according to an embodiment of the present disclosure.
  • FIG. 2B is a diagram showing static electricity charged in fibers of a filter unit through an electrostatic charging mode in an indoor air cleaning device for a vehicle using a nonthermal plasma according to an embodiment of the present disclosure.
  • FIG. 1 is a configuration diagram of an indoor air cleaning device 10 for a vehicle using a nonthermal plasma according to an embodiment of the present disclosure.
  • the indoor air cleaning device 10 for a vehicle using a nonthermal plasma may include an air inlet unit 100 , a filter unit 200 , a discharge electrode unit 300 , an inductive electrode unit 400 , an air outlet unit 500 and a power control unit 600 .
  • the basic operation structure of air purification and circulation is that air from inside and outside enters the vehicle through the air inlet unit 100 , infiltrated air is purified while passing through the filter unit 200 including an electrostatic filter, and purified air is discharged into the vehicle through the air outlet.
  • the discharge electrode unit 300 is formed on the front surface of the filter unit 200 and the inductive electrode unit 400 is formed on the rear surface of the filter unit 200 , and when voltage is applied from the power control unit 600 , discharge occurs, generating ozone, and the filter unit 200 is sterilized by the generated ozone.
  • a sterilization method of an air purifying filter for example, an electrostatic filter
  • a bacteria sterilization method of a filter for indoor air purification includes a radiation method (UV method), a gas method and an electric discharge method, and among them, a sterilization method using ozone ( 03 ) generated by a nonthermal plasma through electric discharge uses the strong oxidizing action of ozone.
  • ozone generated by a nonthermal discharge plasma has the strong oxidizing power and is reduced to oxygen in a short time, an advantage is that it does not generate residual pollutants, and thus it is used in a wide variety of applications in the industry, for example, air pollutant removal, water purification, sterilization and deodoration.
  • ozone sterilization it is generally used for sterilization of commonly found bacteria such as E. coli, B. subtilis and staphylococcus.
  • Ozone has the strongest oxidizing power after fluorine, and due to the oxidizing power, ozone has the properties of sterilization, deodoration, decoloration, and reaction with organics and inorganics.
  • the sterilization power of ozone is strong enough to kill most of bacteria, virus and molds for 4 minutes at the ozone concentration of 0.4 ppm. At higher concentrations, the sterilization power of ozone greatly increases, and it is so powerful enough to break the cell wall in a few seconds, resulting in degradation of cytoplasm which is impossible to be regenerated. In addition, ozone has a great effect of removing odors.
  • the indoor air cleaning device 10 for a vehicle using a nonthermal plasma is characterized in that discharge by the discharge electrode unit 300 and the inductive electrode unit 400 is a corona discharge by a non-uniform electric field.
  • the discharge electrode unit 300 may include one or more wire electrodes made of stainless steel.
  • the wire electrode made of stainless steel 402, about 0.2 mm in diameter and about 230 mm in length may be used, and in the case of a plurality of wire electrodes, each wire electrode should be installed at the same distanced.
  • the inductive electrode unit 400 preferably includes a mesh electrode made of stainless steel.
  • the filter unit 200 is interposed between the wire electrode and the mesh electrode, and in this instance, the discharge electrode unit 300 and the inductive electrode unit 400 are preferably installed at spacings of 22 to 26 mm.
  • Corona discharge is brought on by a non-uniform electric field between the discharge electrode unit 300 including the wire electrode and the inductive electrode unit 400 including the mesh electrode, generating ozone.
  • the number of wire electrodes does not exceed a maximum of seven wire electrodes so that the distance between each wire electrode is sufficiently larger than the spacings between the discharge electrode unit 300 and the inductive electrode unit 400 .
  • the present disclosure may generate ozone not only by the discharge of the two electrode units but also by the surface discharge on the filter unit 200 , resulting in a further increase in ozone generation efficiency.
  • FIG. 2A is a diagram showing reduced static electricity in the fibers of the filter unit 200 in the indoor air cleaning device 10 for a vehicle using a nonthermal plasma according to an embodiment of the present disclosure
  • FIG. 2B is a diagram showing static electricity charged in the fibers of the filter unit 200 through an electrostatic charging mode in the indoor air cleaning device 10 for a vehicle using a nonthermal plasma according to an embodiment of the present disclosure.
  • the indoor air cleaning device 10 for a vehicle using a nonthermal plasma may charge static electricity in the filter fibers of the filter unit 200 .
  • the indoor air cleaning device 10 for a vehicle using a nonthermal plasma preferably allows a user to adjust the magnitude of voltage applied to the discharge electrode unit 300 and the inductive electrode unit 400 by the power control unit 600 . It is possible to operate stepwise in an electrostatic charging mode, a negative ion generation mode and an ozone sterilization mode according to the magnitude of voltage adjusted by the power control unit 600 . To allow the user to adjust the magnitude of voltage, it will be preferred that a mode selection button (not shown) operates with manipulation buttons of the vehicle to allow the user to easily manipulate.
  • the surface area of the filter is reduced due to a reduction of static charge electrically charged in the filter and agglomeration phenomena of the filter fibers as shown in FIG. 2A , and accordingly, the filter effect is drastically reduced.
  • an electrostatic force may be given to the filter, making the filter fibers extend in all directions as shown in FIG. 2B . That is, an increase in the surface area of the filter fibers prevents the reduction in microparticle capturing capability of the filter unit 200 .
  • the indoor air cleaning device 10 for a vehicle using a nonthermal plasma may maintain the best purification performance of the filter unit 200 by periodically using the electrostatic charging mode. Further to this, when the applied voltage further increases to reach the negative ion generation mode, negative ions beneficial for human body are generated, inducing a pleasant indoor environment.
  • the indoor air cleaning device 10 for a vehicle using a nonthermal plasma may efficiently sterilize the air purifying filter in combination with the corona discharge method of simple structure, recharge static elasticity of the electrostatic filter with the precisely controlled magnitude of the applied voltage to maintain the best purification performance of the filter, and generate negative ions beneficial for human body, creating pleasant indoor air conditions.
  • a nonthermal plasma generator including the discharge electrode unit 300 and the inductive electrode unit 400 may operate with the fan attached to the air conditioner in the vehicle, so when the air conditioner operates, it always automatically operates, and at other times, it stops operating, to avoid unnecessary power consumption.
  • an ozone removing unit may be separately provided in the air outlet unit 500 .
  • the ozone removing unit may be installed by combining carbon with good ozone adsorption and a separate filter.
  • an air flow path may be extended to discharge ozone generated from the indoor air cleaning device 10 for a vehicle according to the present disclosure from the air outlet unit 500 to each interior part of the vehicle, in order to remove bad odors in the filter unit 200 as well as the inside of the vehicle and sterilize even the car seats and interior accessories.
  • the indoor air cleaning treatment through ozone may provide a pleasant driving environment to the driver.
US15/781,317 2015-12-03 2016-12-02 Indoor air purification apparatus for vehicle using non-thermal plasma Abandoned US20180361009A1 (en)

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KR10-2015-0171584 2015-12-03
KR1020150171584A KR101801119B1 (ko) 2015-12-03 2015-12-03 비열 플라즈마를 이용한 차량용 실내 공기 청정 장치
PCT/KR2016/014131 WO2017095194A1 (ko) 2015-12-03 2016-12-02 비열 플라즈마를 이용한 차량용 실내 공기 청정 장치

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US20180207572A1 (en) * 2017-01-25 2018-07-26 Samuel Stephen Grimes Reusable air filter
US10596402B2 (en) 2017-12-08 2020-03-24 Oshkosh Corporation Ozone cleaning system
US10792613B1 (en) 2019-03-11 2020-10-06 Oshkosh Corporation Cleaning device
IT202000027005A1 (it) * 2020-11-12 2021-02-12 Poloplasma S R L Processo automatico di sterilizzazione di ambienti confinati, in particolare per isolatori asettici
US10933716B2 (en) * 2019-03-22 2021-03-02 Ford Global Technologies, Llc Autonomous vehicle and method of purging an odor from a passenger cabin of such a vehicle

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CN109915957A (zh) * 2019-04-16 2019-06-21 成都国弘汽车内饰件有限责任公司 一种空气净化消毒机
KR102146401B1 (ko) * 2019-11-19 2020-08-20 박영희 항균, 소취 필터의 제조방법, 항균, 소취 필터의 제조방법에 의해 제조된 항균, 소취 필터, 및 항균, 소취 필터와 플라즈마 살균, 제독장치를 결합한 자동차 에어컨디셔너 공기정화장치

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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US10898843B2 (en) * 2017-01-25 2021-01-26 Samuel Stephen Grimes Reusable air filter
US10596402B2 (en) 2017-12-08 2020-03-24 Oshkosh Corporation Ozone cleaning system
US11420085B2 (en) 2017-12-08 2022-08-23 Oshkosh Corporation Ozone cleaning system
US10792613B1 (en) 2019-03-11 2020-10-06 Oshkosh Corporation Cleaning device
US11110395B2 (en) 2019-03-11 2021-09-07 Oshkosh Corporation Cleaning device
US10933716B2 (en) * 2019-03-22 2021-03-02 Ford Global Technologies, Llc Autonomous vehicle and method of purging an odor from a passenger cabin of such a vehicle
IT202000027005A1 (it) * 2020-11-12 2021-02-12 Poloplasma S R L Processo automatico di sterilizzazione di ambienti confinati, in particolare per isolatori asettici
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US20210379236A1 (en) 2021-12-09
US11730850B2 (en) 2023-08-22
WO2017095194A1 (ko) 2017-06-08
KR20170065724A (ko) 2017-06-14
KR101801119B1 (ko) 2017-11-27

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