CN106369680B - A kind of twin voltage air cleaning system - Google Patents
A kind of twin voltage air cleaning system Download PDFInfo
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- CN106369680B CN106369680B CN201610924190.5A CN201610924190A CN106369680B CN 106369680 B CN106369680 B CN 106369680B CN 201610924190 A CN201610924190 A CN 201610924190A CN 106369680 B CN106369680 B CN 106369680B
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- air cleaning
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- discharging device
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Classifications
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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
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- 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
- B03C3/04—Plant or installations having external electricity supply dry type
- B03C3/08—Plant or installations having external electricity supply dry type characterised by presence of stationary flat electrodes arranged with their flat surfaces parallel to the gas stream
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- 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
- B03C3/017—Combinations of electrostatic separation with other processes, not otherwise provided for
-
- 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
- B03C3/66—Applications of electricity supply techniques
- B03C3/68—Control systems therefor
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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
Abstract
The invention discloses a kind of twin voltage air cleaning systems.Air cleaning system of the invention includes: high-pressure discharging device, electrostatic dust-collecting device, double high-voltage suppling powers and controller.Double high-voltage suppling powers have the first DC output voltage and the second DC output voltage, double high-voltage suppling powers are connected with the high-pressure discharging device, for exporting first or second high pressure to the high-pressure discharging device, double high-voltage suppling powers are also connected with the electrostatic dust-collecting device, for providing static bias voltage for the electrostatic dust-collecting device；The controller is for controlling double high-voltage suppling powers according to the mode of air cleaning system.Air cleaning system of the invention can export two kinds of discharge voltages, and one kind having high purification efficiency, and another kind will not then generate ozone, the present invention can be according to the mechanics of people in object space, high purification efficiency mode is used at nobody, in someone, using ozone free mode.
Description
Technical field
The present invention relates to air cleaning facility fields, and in particular to a kind of new air cleaning system.
Background technique
Atmosphere pollution means being discharged into atmosphere due to mankind's activity or natural process and generates harmful shadow to environment or people
Those of sound substance.Influence of the atmosphere pollution to human body, be first it is sensuously uncomfortable, it is anti-then physiologically to there is invertibity
It answers, further occurs as soon as acute hazard symptom.Atmosphere pollution to the harm of people be broadly divided into acute poisoning, slow poisoning,
Carcinogenic three kinds.In most cases, under indoor or working environment, both after influence of the atmosphere pollution to the mankind mainly.
Atmosphere pollution is mainly shown as that polluter is continuous in low concentration, long-time to the chronic toxic action of human health
After acting on human body, phenomena such as illness rate of appearance increases.Chinese Urban Residents lung cancer morbidity rate is very high, wherein it is highest be on
Sea market, city dweller's respiratory disease are apparently higher than suburb.
It is carcinogenic, it is to influence for a long time as a result, be to damage internal inhereditary material since pollutant long duration of action is in human body,
Mutagenesis makes offspring's body various exceptions occur for example, reproduction cell mutates；Or cause biological cell hereditary
Sudden change effect occurs for substance and hereditary information.Atmosphere pollution will lead to the service life decline of people.
Therefore, in order to avoid or reduce influence of the atmosphere pollution to human body, air cleaning facility is gradually widely applied.
Domestic and international market air purifier substantially has following several at present: 1. electrostatic precipitation formulas, 2. electronic dust-collecting types, 3. ozone types, 4.
Negative ion type, 5. filer element types, 6. active carbon adsorption formulas, 7. ultraviolet disinfection formulas etc..
In these modes, the overall cost of electronic dust-collecting mode and most effective, and the influence to air output is minimum.
But electronic dust-collecting mode carries out air cleaning to there is a problem of one main at present, precisely due to using electrion
Mode, electronic dust-collecting type air cleaning can generate ozone, and ozone has corrosivity, and accumulating in air to a certain extent can be to people
Body brings damage.It is generally acknowledged that it can be quickly converted to highly active free radical-super oxygen base (O2-) after in ozone suction body, it is main
Make unsaturated fat acid oxidase, to cause cellular damage.Ozone can make the airway epithelial cell lipid peroxidation mistake of people
Arachidonic acid increases in journey, and then causes the inflammatory disorders of the upper respiratory tract.
Therefore, it needs to install individual ozone-removing device in the purification system of many electronic dust-collecting types at present, causes net
It is melted into significantly rising for this.
Summary of the invention
In view of the above-mentioned problems, the present invention, which is desirable to provide one kind, can not use ozone-removing device, while can be avoided again smelly
Oxygen to people bring damage air cleaning system and corresponding air purification method.
Specifically, the present invention provides a kind of twin voltage air cleaning system, which is characterized in that the air cleaning system
It include: high-pressure discharging device, electrostatic dust-collecting device, double high-voltage suppling powers and controller.
In a kind of preferred implementation, double high-voltage suppling powers have the first DC output voltage and the second direct current
Output voltage, double high-voltage suppling powers are connected with the high-pressure discharging device, for exporting first or second high pressure to institute
High-pressure discharging device is stated,
Double high-voltage suppling powers are also connected with the electrostatic dust-collecting device, for providing for the electrostatic dust-collecting device
Static bias voltage；
The controller is for controlling double high-voltage suppling powers according to the mode of the air cleaning system.
In another preferred implementation, the high-pressure discharging device includes several tungsten wires and discharge electrode, the tungsten wire
It is arranged at distances from one another with the discharge electrode, forms ionization channels therebetween.
In another preferred implementation, the electrostatic dust-collecting device includes multiple first dusts and multiple second dusts
Plate, first collecting plate and second collecting plate are arranged at distances from one another, and form parallel dust channel therebetween, described
Double high tension voltage power supplys are respectively that first collecting plate and second collecting plate provide positive and negative bias voltage.
In another preferred implementation, the air cleaning system further includes the first filter screen and the second filter screen,
First filter screen is located in front of the high-pressure discharging device, after second filter screen is located at the electrostatic dust-collecting device
Side.
In another preferred implementation, the controller can receive the mankind's activity time in target better purifying space
Relevant information；Based on the relevant information of mankind's activity time, the first predetermined time before the respective activity time is with the first mould
Formula starts air cleaning system；The second pre- timing based on the relevant information of mankind's activity time, before the respective activity time
Between, stop the first mode, starts air cleaning system in a second mode.
In another preferred implementation, the air cleaning system includes information receiving module, the controller packet
Memory module and mode selection module are included, the information receiving module is for receiving the mankind's activity time in target better purifying space
Relevant information, relevant information of the mode selection module based on the mankind's activity time, first before the respective activity time
Predetermined time starts air cleaning system in the first pattern, the second predetermined time before the respective activity time, described in stopping
First mode starts air cleaning system in a second mode.
Preferably, the controller further includes mode setting module described in mode setting module for being set based on external input
Surely start the condition of the first mode and the second mode, and for setting the first mode and the second mode
Corresponding working condition.
Preferably, in the first mode, the high-pressure discharging device of the air cleaning system is with the progress of the first high pressure
Electric discharge, in the second mode, the high-pressure discharging device of the air cleaning system is discharged with the second high pressure.
The air cleaning system further includes air pollution index measuring device, and the air pollution index measuring device is used
Air pollution index in measurement target better purifying space, during the air cleaning system works in a second mode, if institute
The air pollution index stated in object space is higher than predetermined threshold, then the controller starts the first of the air cleaning system
Mode, until the air pollution index in the object space is lower than the predetermined threshold.
In the first mode, the discharge voltage of the high-pressure discharging device is 7000-9000V, in second mould
In formula, the discharge voltage of the high-pressure discharging device is 3000-5000V.
In a kind of preferred implementation, the thickness that the pole plate of high-pressure discharging device is set as front end is less than to the thickness of rear end
It spends, and the thickness that the pole plate of the electrostatic dust-collecting device is also configured as front end is less than to the thickness of rear end.
Technical effect
Air cleaning system of the invention can provide two different put using double high-voltage suppling powers for electric discharge device
Piezoelectric voltage.A kind of discharge voltage has the purification efficiency much higher than other discharge voltages, and another discharge voltage, which has, to be far below
The ozone production quantity of other discharge voltages.The present invention carries out air cleaning mode according to the movable rule of people in target place
Select in advance, before people do not enter place, using the first discharge mode carry out air cleaning, people enter place it
Afterwards, air cleaning is carried out using the second way.
By using air cleaning system of the invention, it can either guarantee the high-efficient purification of air in target place, reduce
Cost, and can be avoided damage of the ozone caused by air cleaning system to human body.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of air cleaning system of the invention.
Specific embodiment
Below in conjunction with attached drawing and embodiment, the present invention is described in detail, but not therefore by protection model of the invention
It encloses and is limited among the range of embodiment description.
Embodiment 1
As shown in Figure 1, in the present embodiment, air cleaning system include: high-pressure discharging device 1, electrostatic dust-collecting device 2,
Power supply 3 and controller 4.It is also added to air purifying filter mesh 5,6 respectively in front-end and back-end in the present embodiment.Primary air
Filter screen 5 is located in front of high-pressure discharging device, and composite air filtering net 6 is located at the electrostatic dust-collecting device rear.
In the present embodiment, power supply directly connects alternating current using double high-voltage suppling powers, input terminal, and output winding includes
Two groups of windings, first group of winding can export the DC voltage of 8000V, and second group of winding can export the DC voltage of 4000V.
Double high-voltage suppling powers 3 are connected with high-pressure discharging device 1, fill for exporting first or second high pressure to electrion
Set 1.Double high-voltage suppling powers 3 are also connected with the electrostatic dust-collecting device 2, for providing quiescent biasing for electrostatic dust-collecting device 2
Voltage.Controller 4 is connected with power supply 3, for being controlled according to the mode of air cleaning system to double high-voltage suppling powers
System.
In the present embodiment, static bias voltage can be set in 2000-4000V, according to the width of selected collecting plate
It spends the width of (along air channel) and air duct and specifically determines.
As shown in Figure 1, high-pressure discharging device 1 includes that a plurality of tungsten wire and multiple discharge electrodes, the two are arranged at distances from one another, the two
Between form ionization channels.The distance between tungsten wire and discharge electrode are in 20-60cm, so as to while guaranteeing that ventilation is smooth, energy
It is poor enough to provide enough ionization voltages,
Similarly, electrostatic dust-collecting device includes multiple collecting plates, the negative arranged for interval of multiple collecting plates one positive one, positive and negative collection
Polarity of voltage on dirt plate can be interchanged.Dust channel is formed between collecting plate, the width in dust channel will be less than length as far as possible,
To guarantee that electric power particle when through dust channel, has enough flying distances that can be attracted on collecting plate.
Air cleaning system of the invention when in use, the air entered from the external world or the sky that is pumped into from indoor air inlet
Gas, first by primary filtration network 5, primary filtration network 5 is filtered some biggish dust or sundries, is passing through primary mistake
After strainer 5, air is first into ionization channels, i.e., between tungsten wire and discharge electrode, tungsten wire connects anode, and discharge electrode connects cathode,
The sundries in air is ionized by electric discharge, so that pollutant charges.
Air is further advanced along air duct, enters debris collection area --- and electrostatic dust collecting plate is formed by dust channel
In, it, can be between pole plate under the action of electric field, gradually since pollutant has been ionized when air is advanced in dust channel
Deviate original track, is adsorbed on pole plate.The pure air after pollutant is removed then again by filter screen from clarifier
It leaves outlet.
Using double high-voltage suppling powers of the invention, air cleaning facility is capable of providing two kinds of purification patterns, a kind of purification
The high pressure of 8000V is used under mode, under the voltage, purification efficiency is up to 90%, and dedusting ratio is also high, can rapidly remove air
In pollutant.In the second mode, using the high pressure of 4000V, in this mode, ozone will not be generated, is examined by ozone
Instrument detection is surveyed, the reading of Ozone Monitor is 0.Preferably, in the first mode, the bias voltage of collecting plate is selected as 4500,
In the second mode, the bias voltage of collecting plate is selected as 2800V, to improve collection efficiency.
Although the inventors of the present application found that 8000V high pressure carry out air cleaning when, purifying and dedusting is high-efficient,
It is easy to produce ozone, and ozone can be built up in air, and then bring injury to human body.Inventor is sent out by many experiments
Existing, after voltage is adjusted to 4000V, ozone yield can be reduced to the degree that current instrument can not detect, that is, reach
0 ozone (it could also be possible that can not be detected since content is very few) of current detection level.
Therefore, in order to not only guarantee the cleaning of room air, but also ozone is avoided to bring injury to human body, system of the invention is adopted
With following workflow:
(1), empty for input target purification in the controller of air cleaning system by control panel or data-interface first
Between the middle mankind's activity time relevant information；
(2), then, relevant information of the controller based on the mankind's activity time, first before the respective activity time are pre-
It fixes time and starts air cleaning system in the first pattern；The second predetermined time before the respective activity time stops described the
One mode, second mode start air cleaning system.
In the following, each step in the course of work of present system is described in more detail.
When system works, basis presets or is obtained according to the schedule information of the object space updated at any time first
The mankind's activity time of object space.For example, available office space utilizes the time for office space, for
For meeting room, available meeting room uses timetable, uses the time according to using timetable to obtain.
Obtain object space using after the time, can be according to using the time to determine operating mode.For example, work in the morning
In 2 times hour before starting as the time, start the first high pressure purge mode, the first high pressure purge mode uses 8000V
High pressure can be spent rapidly indoor air pollutants are cleared under this high pressure purge mode.Although using the mode meeting
A certain amount of ozone is generated, still, ozone exists 20-30 minutes in air, will voluntarily decompose, and becomes oxygen and oxygen is former
Son.Therefore, air cleaning system of the invention at work between start before purification pattern was revised as the second mould in 30-40 minutes
Formula, second mode uses the high pressure of 4000V, under this purification pattern, then no longer generates ozone.Therefore, when people enter
It, will not be by the harm for receiving ozone after office space.
Embodiment 2
In the present embodiment, another implementation is provided.
The system of the present embodiment includes air pollutants measuring device.The system uses such course of work:
S1: being first that target better purifying space is inputted in the controller of air cleaning system by control panel or data-interface
The relevant information of middle mankind's activity time；
S2: and then relevant information of the controller based on the mankind's activity time in object space, before the respective activity time
The first predetermined time (such as 2-3 hours) start air cleaning system in the first pattern；Before the respective activity time
Two predetermined times (such as 30-40 minutes), stops the first mode, start air cleaning system in a second mode；
S3: the air pollution index in target better purifying space is obtained using air pollutants measuring device；
S5: if the air pollution index in object space is higher than predetermined threshold (for example PM2.5 is higher than 200), start institute
The first mode (8000V mode) for stating air cleaning system, until the air pollution index in object space is predetermined lower than described
Threshold value starts the second mode (4000V) of the air cleaning system.
Using this implementation, air cleaning system of the invention can maintain higher air matter in object space
Amount, without bringing biggish damage to human body.Because the inventors of the present application found that compared to produced by air cleaning system
Ozone for, air pollution, damage of the especially higher than certain density particulate matter to human body wants even more serious.
Embodiment 3
Similar to Example 1, in the present embodiment, air cleaning system includes: high-pressure discharging device, electrostatic precipitation dress
It sets, power supply and controller.It is added to air purifying filter mesh 5,6 respectively in front-end and back-end.Primary air filter screen 5 is located at
In front of high-pressure discharging device, composite air filtering net 6 is located at the electrostatic dust-collecting device rear.Power supply is supplied using double high pressures
Power supply, input terminal directly connect alternating current, and output winding includes two groups of windings, and first group of winding can export the direct current of 8000V
Voltage, second group of winding can export the DC voltage of 4000V.
With the purification system in embodiment 1 the difference is that, in the present embodiment, by the pole of the electrostatic dust-collecting device
The thickness that plate is also configured as front end is less than the thickness of rear end.
Using this setup, when applying high pressure, for electrostatic dust-collecting device, after the voltage of front end can be higher than
End, this mode can allow the effect of bias voltage to be located further forward, and the lateral starting acceleration of this like-particles is bigger, and then promote band
The absorption of charged particle.
In another preferred implementation, the close air intake vent side of the collecting plate of electrostatic dust-collecting device, collecting plate
Several micro-protrusions are formed in plate face, the protrusion on adjacent two plate is opposite to each other.
Although the principle of the present invention is described in detail above in conjunction with the preferred embodiment of the present invention, this field skill
Art personnel are it should be understood that above-described embodiment is only the explanation to exemplary implementation of the invention, not to present invention packet
Restriction containing range.Details in embodiment is simultaneously not meant to limit the scope of the invention, without departing substantially from spirit of the invention and
In the case where range, any equivalent transformation based on technical solution of the present invention, simple replacement etc. obviously change, and all fall within
Within the scope of the present invention.
Claims (6)
1. a kind of twin voltage air cleaning system, which is characterized in that the air cleaning system includes: high-pressure discharging device, quiet
Electric dust collecting means, double high-voltage suppling powers and controller, double high-voltage suppling powers have the first DC output voltage and the
Two DC output voltage, double high-voltage suppling powers are connected with the high-pressure discharging device, for exporting first or second height
It presses to the high-pressure discharging device,
Double high-voltage suppling powers are also connected with the electrostatic dust-collecting device, for providing static state for the electrostatic dust-collecting device
Bias voltage；
The controller is used to control double high-voltage suppling powers according to the mode of the air cleaning system,
Wherein, the controller can receive the relevant information of mankind's activity time in target better purifying space；Based on mankind's activity
The relevant information of time, the first predetermined time before the respective activity time start air cleaning with the first mode of high voltage
System；Based on the relevant information of mankind's activity time, the second predetermined time before the respective activity time stops described first
Mode starts air cleaning system with the second mode of low-voltage, wherein second predetermined time is greater than ozone decaying week
Phase, in the first mode, the high-pressure discharging device of the air cleaning system are discharged with the first high pressure, described
In two modes, the high-pressure discharging device of the air cleaning system is driven to discharge with the second high pressure, in the first mode
In, the discharge voltage of the high-pressure discharging device is 7000-9000V, in the second mode, the high-pressure discharging device
Discharge voltage is 3000-5000V.
2. air cleaning system according to claim 1, which is characterized in that the high-pressure discharging device includes several tungsten wires
And discharge electrode, the tungsten wire and the discharge electrode are arranged at distances from one another, and form ionization channels therebetween.
3. air cleaning system according to claim 1, which is characterized in that the electrostatic dust-collecting device includes multiple first
Collecting plate and multiple second collecting plates, first collecting plate and second collecting plate are arranged at distances from one another, shape between the two
At parallel dust channel, double high-voltage suppling powers are respectively that first collecting plate and second collecting plate provide
Positive and negative bias voltage.
4. air cleaning system according to claim 1, which is characterized in that the air cleaning system further includes the first mistake
Strainer and the second filter screen, first filter screen are located in front of the high-pressure discharging device, and second filter screen is located at institute
State electrostatic dust-collecting device rear.
5. air cleaning system according to claim 1, which is characterized in that the air cleaning system includes that storage is single
Member, there are two types of operating mode informations for storage in the storage unit.
6. air cleaning system according to claim 1, which is characterized in that the controller includes timing module, described
Timing module is for triggering the controller and then starting relevant work mode.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2016108936837 | 2016-10-13 | ||
| CN201610893683 | 2016-10-13 |
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| CN106369680B true CN106369680B (en) | 2019-08-02 |
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| CN201610924190.5A Active CN106369680B (en) | 2016-10-13 | 2016-10-24 | A kind of twin voltage air cleaning system |
| CN201621201956.9U Active CN206152560U (en) | 2016-10-13 | 2016-11-08 | Non -ozone air purification equipment |
| CN201610982191.5A Active CN106513177B (en) | 2016-10-13 | 2016-11-08 | A kind of twin voltage air purification method |
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| CN201621201956.9U Active CN206152560U (en) | 2016-10-13 | 2016-11-08 | Non -ozone air purification equipment |
| CN201610982191.5A Active CN106513177B (en) | 2016-10-13 | 2016-11-08 | A kind of twin voltage air purification method |
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| CN105371378A (en) * | 2015-10-30 | 2016-03-02 | 苏州天擎电子通讯有限公司 | Electrostatic air purifier |
| CN109127145B (en) * | 2017-06-27 | 2024-04-16 | 刘庆军 | Safety control method and safety control device for electrostatic air purifier and electrostatic air purifier using same |
| CN107178876B (en) * | 2017-06-27 | 2019-11-26 | 广东美的制冷设备有限公司 | Control method, control device, computer readable storage medium and air conditioner |
| CN109812886A (en) * | 2017-11-17 | 2019-05-28 | 刘庆军 | Air cleaning system and air purification method based on particle |
| CN108380391B (en) * | 2018-02-11 | 2024-01-30 | 洁通科技（北京）有限公司 | Ozone-free double-path four-voltage high-voltage electrostatic precipitator and control method thereof |
| WO2019196015A1 (en) * | 2018-04-10 | 2019-10-17 | 广东美的制冷设备有限公司 | Air purification apparatus and sterilization method therefor |
| CN109019263B (en) * | 2018-09-07 | 2020-03-17 | 苏州淳雨净化科技有限公司 | Anion sterilization elevator car |
| RU198658U1 (en) * | 2019-12-26 | 2020-07-21 | Общество С Ограниченной Ответственностью "Тион Инжиниринг" | Air filtration device |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN106513177B (en) | 2019-04-05 |
| CN106369680A (en) | 2017-02-01 |
| CN106513177A (en) | 2017-03-22 |
| CN206152560U (en) | 2017-05-10 |
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