CN210386194U - Corona discharge type air purification device - Google Patents

Corona discharge type air purification device Download PDF

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Publication number
CN210386194U
CN210386194U CN201920343876.4U CN201920343876U CN210386194U CN 210386194 U CN210386194 U CN 210386194U CN 201920343876 U CN201920343876 U CN 201920343876U CN 210386194 U CN210386194 U CN 210386194U
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main body
positive electrode
corona discharge
electrodes
needle
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森井隆平
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Forest Well Co ltd
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Forest Well Co ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F24F8/192—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by electrical means, e.g. by applying electrostatic fields or high voltages
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/02—Plant or installations having external electricity supply
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/40—Electrode constructions
    • B03C3/41—Ionising-electrodes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/40—Electrode constructions
    • B03C3/45—Collecting-electrodes
    • B03C3/49—Collecting-electrodes tubular
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/20—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation
    • F24F8/24—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation using sterilising media
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/30—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by ionisation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/80—Self-contained air purifiers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
  • Electrostatic Separation (AREA)

Abstract

A corona discharge type air cleaner comprises a housing main body having an air inlet and including an upper surface portion formed of titanium, a positive electrode having a thickness of about 1.5mm and formed of a plurality of air discharge holes of slit-shaped or lattice-shaped hole portions formed in the upper surface portion of the housing main body, a positively charged cylindrical dust collecting plate suspended from the upper surface portion around the air discharge holes toward the inside of the housing main body, a plurality of needle-shaped electrodes made of stainless steel and having distal ends facing the positive electrode and opposed to the lattice-shaped positive electrode, and a DC high-voltage current unit for generating a DC high-voltage upon receiving a DC low-voltage and applying the DC high-voltage to the plurality of needle-shaped electrodes.

Description

Corona discharge type air purification device
Technical Field
The utility model relates to a corona discharge type air purification device for generating ion wind and ozone, which relates to a corona discharge type air purification device for degerming, sterilization, deodorization and dust collection.
Background
Conventionally, there are apparatuses for sterilizing and deodorizing objects such as garbage by generating ions and ozone by corona discharge, and sterilizing and deodorizing apparatuses for conveying generated ions and ozone to a space where the objects are disposed by performing corona discharge in a space other than the space where the objects are disposed.
However, although the conventional corona discharge type sterilization and deodorization device can purify air by corona discharge, the ion wind is weak and the capability of collecting dust by charging the dust is not sufficient in some cases.
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open publication 2017-217572
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved by the utility model
An object of the utility model is to provide a corona discharge type air purification device who has abundant degerming, disinfect, deodorization and dust collection effect that reinforcing ion wind and collection dirt are efficient.
Technical scheme for solving technical problem
The present invention provides the following corona discharge type air purification device for sterilization, deodorization and dust collection to achieve the above object.
The utility model discloses a sterilizing, deodorizing, dust collecting corona discharge air purifying device which comprises
A housing main body having an air inlet and including an upper surface portion formed of titanium,
A positive electrode having a thickness of about 1.5mm and formed by a plurality of vent holes of slit-shaped or lattice-shaped holes formed in the upper surface of the case main body,
A positively charged cylindrical dust collecting plate suspended from the upper surface part around the exhaust hole toward the interior of the housing main body,
A plurality of needle-like electrodes made of stainless steel as negative electrodes opposed to the lattice-like positive electrodes and having tip portions opposed to the positive electrodes,
A corona discharge type air purification device formed by a DC high voltage current unit which receives the DC low voltage and generates the DC high voltage to apply the DC high voltage to the plurality of needle electrodes,
wherein a high direct current voltage is applied between the positive electrode and the plurality of needle electrodes, thereby forming corona discharge between the negative electrode and the positive electrode to generate ozone and ions to form a negative ion wind toward the positive electrode, surrounding air is rolled toward the exhaust hole in the housing main body, and fine dust contained in the air is attached to the positively charged dust collecting plate to perform sterilization, deodorization and dust collection.
Effect of the utility model
Through the utility model discloses a disinfect, deodorization, collect dirt and use corona discharge formula air purification device can for example apply 7KV-8 KV's high voltage in order to produce corona discharge and ozone and form the strong anion wind towards the positive electrode between the positive electrode of slit-shaped titanium and needle electrode, collect dirt to the ion of taking the burden electricity with high efficiency through the integrated board of the tube-shape of taking the burden electricity of configuration around the exhaust hole to the ion stream is led the exhaust hole with high efficiency and is disinfected and deodorized.
Drawings
Fig. 1 is a perspective view of the corona discharge type air cleaning device of the present invention.
Fig. 2 shows an upper surface portion of a housing main body of a corona discharge type air cleaning device having a positive electrode constituted by a plurality of air discharge holes of slit-shaped hole portions or lattice-shaped hole portions.
Fig. 3 is a side view of the corona discharge type air cleaning device of the present invention.
Fig. 4 is a schematic diagram showing an internal structure of the corona discharge type air cleaning device of the present invention.
Fig. 5 is a view showing a needle electrode mounting plate disposed inside the housing main body and provided with a needle electrode on the upper surface.
Fig. 6 shows a conductive pattern formed on the lower surface of the needle electrode mounting plate and electrically connected to the needle electrodes provided on the upper surface.
Fig. 7 shows the results of viable cell count measurement of the gelatin filter.
Fig. 8 shows the measurement results of the number of floating particles in the natural attenuation.
Fig. 9 shows the measurement result of the number of floating particles during the operation of the specimen.
Fig. 10 shows the result of Cryjl concentration measurement.
Fig. 11 shows the measurement result of the number of floating particles in the measurement process at the time of natural attenuation.
Fig. 12 shows the measurement result of the number of floating particles in the measurement process during the operation of the specimen.
Figure 13 shows the results of ammonia related experiments.
Fig. 14 shows the test results relating to hydrogen sulfide.
Fig. 15 shows the results of the cigarette dust removal performance test.
Detailed Description
Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. These embodiments are examples for illustrating the present invention and should not be construed as limiting the present invention to these embodiments. All aspects falling within the scope of the invention as defined in the claims, if there are no particular contradictions, are intended to be covered by the present invention.
Fig. 1 shows a corona discharge type air cleaner 1 for sterilization, deodorization, and dust collection according to an embodiment of the present invention. The air cleaning device 1 has a square shape, and a positive electrode constituted by a plurality of circular exhaust holes 3 having 6 parallel slits 2 is provided on an upper surface portion 4, and the outer periphery of the upper surface portion 4 is surrounded by 4 sides of the square shape. The upper part of the side surfaces 5-1 and 5-2 is provided with 3 rows of air suction ports 6, and the lower part of the side surface 5-1 is provided with a switch SW for turning on/off the air cleaning device. Refer to fig. 1 and 3. In the present embodiment, the air cleaning device main body has a square shape, but if a plurality of parallel slit-shaped circular exhaust holes 3 can be provided in the upper surface portion 4, the shape of the air cleaning device main body is not limited to the square shape. In the case where the air cleaning device main body is covered with another independent cover, 1 or 2 sides may be omitted if the strength of the main body is not affected.
The utility model discloses an among the corona discharge formula air purification device for sterilization, deodorization, collection dirt, the thickness of positive electrode is preferred 1.5mm, can make the later-mentioned ionic wind grow strong by this to can carry out collection dirt, disinfect and disinfect high-efficiently. In addition, in order to prevent deterioration due to oxidation by ozone, at least the upper surface portion of the air cleaning device main body is formed of titanium, and preferably the entire air cleaning device main body is formed of titanium.
Fig. 2 shows an upper surface portion 4 in which a plurality of circular exhaust holes 3 each formed of 6 parallel slits 2 having different lengths are provided substantially at the center. The utility model discloses a corona discharge formula air purification device also can have and violently erect in order to replace the slit of a plurality of parallels for the check shape's of check form exhaust hole. As shown in fig. 4, a cylindrical dust collecting plate 7 is provided so as to hang from the periphery of the exhaust hole toward the inside of the housing main body, and the dust collecting plate is positively charged, so that particles such as pollen charged negatively can be collected. Although not shown in detail in the drawings, the upper surface portion 4 is detachable from the air cleaning apparatus main body by screws or the like, and the cylindrical dust collecting plate 7 is also detachable from the upper surface portion 4, so that dust particles such as pollen after dust collection can be removed.
Fig. 4 shows the internal structure of the corona discharge type air cleaning device, fig. 5 shows the upper surface of the needle electrode mounting plate 8, and fig. 6 shows the conductive pattern 10 which is electrically connected to 21 needle electrode mounting positions 9 which are uniformly arranged on the upper surface of the needle electrode mounting plate 8. As shown in fig. 4, the base of the needle electrode 11 is fixed to the needle electrode mounting position 9 of the needle electrode mounting plate 8 by solder or the like, the tip portion extends inward of the cylindrical dust collecting plate 7, and is opposed to the circular exhaust hole 3 of the upper surface portion 4 at a desired distance, and the needle electrode mounting plate 8 is supported by the bottom plate of the air cleaning device 1 via support legs 12.
In fig. 4, reference numeral 13 denotes an external power supply terminal, 14 denotes an adapter capable of converting an ac voltage of 100V into a dc voltage of about 12V, 15 denotes a transformer capable of converting a dc voltage of 12V or the like into a high voltage of 7KV to 8KV, and the high voltage is applied to the needle electrode 11 at the needle electrode mounting position 9 via the conductive pattern 10.
By applying a high voltage between the plurality of needle-like negative electrodes and the positive electrode constituted by the air discharge hole, corona discharge is formed between the air discharge hole of the case main body and the tip end portions of the plurality of needle-like electrodes to generate ions and ozone, and a negative ion wind toward the positive electrode is formed, and the surrounding air is wound in the case main body toward the air discharge hole, so that fine dust contained in the air adheres to the dust collecting plate of the positive electrode and is sterilized and disinfected.
Examples
Right the utility model discloses a following air purification performance test has been implemented to following corona discharge formula air purification device. 2. 3, 4 were conducted by the institute for food analysis center of japan (osaka fun, mozu, moku, ASAGI, 7 street, No. 4, 41).
1. Evaluation test for removing Performance on Floating bacteria (Staphylococcus epidermidis)
2. Evaluation test of pollen removing Performance
3. Deodorization effectiveness test (Ammonia and Hydrogen sulfide)
Sample (tested the corona discharge air purifier of the utility model)
1. Corona discharge type air purification device
(1) Outer dimensions of the housing 10cm x 10cm cubic
(2) The wall thickness of the shell is 1.5mm
(3) Titanium casing
(4) Parallel slits arranged at equal intervals in the circular vent holes with a diameter of 70mm (slit 8mm wide and slit-to-slit distance 4mm)
(5) The diameter of the cylindrical dust collecting plate is 70mm, and the height of the cylindrical dust collecting plate is 10mm
(6) 21 needle-like negative electrodes arranged at equal intervals corresponding to the exhaust holes, the distance between the needle-like electrodes and the positive electrode being 8mm to 10mm (see FIG. 4)
(7) Adapter (converting AC voltage to DC12V)
(8) High voltage transformer (transforming DC12V to 7000-8000V high voltage)
(9) Conductive pattern for needle electrode (see FIG. 6)
1. Evaluation test for removing Performance on Floating bacteria (Staphylococcus)
(1) Test summary
The test was carried out with reference to the text D (stipulated) "evaluation test of removal performance of floating viruses" attached to the japanese motor industry society JEM1467 home air cleaner (revised 3/25/2015). Among them, the test microorganisms were carried out using the strains shown below, with the culture conditions being changed. Staphylococcus epidermidis NBRC 12993 (Staphylococcus epidermidis). The measurement conditions are shown in table 1, and the temperature and humidity at the start and end of the measurement are shown in table 2.
[ Table 1]
Test conditions
Figure DEST_PATH_GDA0002326389320000051
[ Table 2]
Temperature and humidity at the beginning and end of the test
Figure DEST_PATH_GDA0002326389320000061
Measurement machine: ONDORORI (お Ph どとり) TR-72nw [ T & D (ティアソドディ Co., Ltd ]
Non-operation of sample
(2) Measurement results
The results of measuring the number of viable cells of the gelatin filter are shown in fig. 7, and the results of measuring the number of floating particles during natural attenuation and sample running are shown in fig. 8 and 9, respectively.
As is clear from fig. 7, 8, and 9, when the sample is run, the number of staphylococcus is greatly reduced compared to the reduction due to natural attenuation, and the corona discharge type air cleaning device of the present invention has a very high capability of removing bacteria (staphylococcus) floating in the air.
2. Evaluation test of pollen removing Performance
(1) Test summary
The test was carried out by referring to the attached text D (stipulated) "evaluation test of removal performance of floating virus" of Japanese Electrical machinery Industrial Association JEM1467 Home-use air purifier (revised 3/25/2015), which is a general society, wherein the test conditions were changed using cedar (Japanese: スギ) pollen extract as a test object. The test conditions are shown in Table 3, and the temperature and humidity at the start and end of the test are shown in Table 4.
[ Table 3]
Test conditions
Figure DEST_PATH_GDA0002326389320000062
[ Table 4]
Temperature and humidity at the beginning and end of the test
Figure DEST_PATH_GDA0002326389320000071
Measurement machine: ONDORI TR-72nw (T & D Co., Ltd.)
(2) Measurement results
The results of the Cryj1 concentration measurement are shown in FIG. 10. Fig. 11 and 12 show the results of measurement of the number of floating particles during the measurement of the natural attenuation and the operation of the specimen, respectively.
As is clear from fig. 10, 11, and 12, when the specimen is run, the number of the floating pollen particles is greatly reduced compared to the reduction due to the natural attenuation, and the performance of the corona discharge type air cleaning device for removing the pollen particles floating in the air is very high.
3. Deodorization effectiveness test (Ammonia and Hydrogen sulfide)
(1) Test summary
The deodorizing effect of the sample on ammonia and hydrogen sulfide was tested by the gas detection tube method.
(2) Test method
a) Reagent and tool
Dryer (about 109L) [ Fine (Fine) ]
Ammonia: gas generated from ammonia (28%, special grade) (zongzi chemical reagent corporation) was used.
Hydrogen sulfide: a gas produced by adding dilute sulfuric acid to iron (II) sulfide (used for generating hydrogen sulfide) (zong chemical co., ltd.) was used.
Gas detecting tube (gas technology Co., Ltd. (Kabushiki Kaisha ガステツク))
b) Operation of
The sample and the stirrer fan were placed in a desiccator (about 109L), and the stirrer fan was operated to add the test gas so as to reach the set gas concentration. The stirring fan is stopped and the sample is started, and the gas concentration in the dryer is measured by using the gas detection pipe every time a period of time elapses. The same operation is performed without starting the sample. The test in which the sample was not put and the same operation was performed was designated as a blank test. The test conditions are shown in Table 5.
[ Table 5]
Test conditions
Figure DEST_PATH_GDA0002326389320000081
(3) Test results
The results of the ammonia test are shown in fig. 13, and the results of the hydrogen sulfide test are shown in fig. 14.
As is clear from fig. 13, the sample was run to exhibit a high ammonia deodorizing effect with respect to ammonia deodorization, and as is clear from fig. 14, the performance of removing hydrogen sulfide was extremely high.
4. Evaluation test of cigarette dust removal Performance
The evaluation test of the cigarette dust removal performance was carried out as follows.
In a sealed box of dimensions 750 by 350 by 300mm in width, 1 cigarette was lit and left to burn completely, and the measurement was started, and the cigarette dust concentration was measured every 3 minutes. As the testing machine, "electronic dust meter P-5H" manufactured by Kaita science corporation was used. The data of the test results of the cigarette dust removal performance are shown in fig. 15.
As shown in the test result data of the cigarette dust removing performance, the cigarette dust concentration hardly decreased during 30 minutes in the natural damping, and compared with this, the cigarette dust concentration decreased to a very low level after 12 minutes in the use of the air cleaning device of the present invention.
Possibility of industrial utilization
The corona discharge air cleaning apparatus of the present invention is excellent in dust collection, sterilization and disinfection performances such as planktonic bacteria removal performance, pollen removal performance, deodorization effect (ammonia and hydrogen sulfide), and cigarette dust removal performance, and therefore has a large possibility of utilization in the industry.
Description of the symbols
1 · corona discharge type air cleaning device, 2 · slit, 3 · exhaust hole (positive electrode), 4 · upper surface portion, 5-1, 5-2 · side face, 6 · air inlet, 7 · dust collecting plate, 8 · needle electrode mounting plate, 9 · needle electrode mounting position, 10 · conductive pattern, 11 · needle electrode, 12 · supporting leg, 13 · external power supply terminal, 14 · dc voltage adapter, 15 · transformer, SW · on/off switch.

Claims (1)

1. An air cleaning device comprises a housing main body having an air inlet and including an upper surface part made of titanium,
A positive electrode having a thickness of about 1.5mm and formed by a plurality of vent holes of slit-shaped or lattice-shaped holes formed in the upper surface of the case main body,
A positively charged cylindrical dust collecting plate suspended from the upper surface part around the exhaust hole toward the interior of the housing main body,
A plurality of needle-like electrodes made of stainless steel as negative electrodes opposed to the lattice-like positive electrodes and having tip portions opposed to the positive electrodes,
A corona discharge type air purification device formed by a DC high voltage current unit for receiving DC low voltage and generating DC high voltage to apply the DC high voltage to the plurality of needle electrodes,
a high DC voltage is applied between the positive electrode and the plurality of needle electrodes, whereby corona discharge is formed between the negative electrode and the positive electrode to generate ozone and ions to form a negative ion wind toward the positive electrode, and the surrounding air is wound toward the exhaust hole in the housing main body, so that fine dust contained in the air adheres to the positively charged dust collecting plate to perform sterilization and deodorization.
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