CN214319597U

CN214319597U - Dry type labyrinth electrostatic adsorption device

Info

Publication number: CN214319597U
Application number: CN202022474365.1U
Authority: CN
Inventors: 陈森; 郭恩君
Original assignee: Wuhan Mudu Environmental Technology Co ltd
Current assignee: Wuhan Mudu Environmental Technology Co ltd
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2021-10-01
Anticipated expiration: 2030-10-30

Abstract

The utility model provides a dry type labyrinth electrostatic adsorption device, which comprises a shell, wherein a labyrinth electrostatic adsorption area is arranged in the shell; the labyrinth electrostatic adsorption area comprises a first labyrinth electrostatic adsorption area and/or a second labyrinth electrostatic adsorption area; the structure of the first labyrinth electrostatic adsorption zone is as follows: the side edges of the first U-shaped structures are connected with each other to form an adsorption column, and the first U-shaped structures extend from top to bottom; the openings of the adsorption columns are oppositely arranged, the free ends of the first U-shaped structures of one adsorption column mutually extend into the U-shaped openings of the first U-shaped structures of the opposite adsorption column, and the U-shaped openings of the adsorption columns are also extended by the free ends of the opposite first U-shaped structures, so that a labyrinth structure of multiple turn-back airflow is formed; one end of a labyrinth structure consisting of a plurality of first U-shaped structures is a first air inlet, and the other end of the labyrinth structure is a first air outlet; one of the adsorption columns is electrically connected with the main control circuit board. Therefore, the dust removal efficiency can be greatly improved, and the ventilation quantity is high.

Description

Dry type labyrinth electrostatic adsorption device

Technical Field

The utility model relates to a dust collecting equipment field, especially a dry-type maze electrostatic adsorption device.

Background

The existing commonly used dust removal device usually adopts a filtering dust removal mode, for example, a household dry type labyrinth electrostatic adsorption device adopting a filter screen structure is provided with a filter element structure, and the filter element structure is used for filtering dust in air. Or a bag-type dust collector commonly used in industrial application, and a plurality of bags are also used for filtering dust in air. However, the scheme has the following defects that 1, the service life is short, and when the dust content in the air is high, the filter element structure and the cloth bag structure are blocked quickly and need to be replaced or cleaned. 2 is a weak filtering capability for small inhalable particles below PM 10. Compared with dry dust removal, wet dust removal has great advantages. Mainly has better dust removal effect. Chinese patent document CN103933818A describes a wet-type negative ion dry-type labyrinth electrostatic adsorption device, which adopts a combination structure of a liquid-phase labyrinth and a negative ion device to improve the dust removal effect. CN105617808A also discloses a silent dry type labyrinth electrostatic adsorption device, which adopts a combination structure of an adsorption zone, a moisture absorption zone and electrostatic dust removal to improve the dust removal effect. Tests show that the dust removal effect of the scheme is superior to that of a filtering dust removal mode. However, there are also disadvantages in that 1 is a small ventilation flow rate and it is difficult to continue expansion. 2, the adsorption efficiency is not high, resulting in a large volume of the apparatus. The arrangement of 3 is a plurality of subareas, which also results in a larger volume of the entire device compared to a device with a filter dust removal mode.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a dry-type maze electrostatic adsorption device is provided, can improve the efficiency of removing dust when guaranteeing dust removal effect, reduce entire system's volume, can be convenient enlarge the flow of ventilating according to using the scene. In the preferred scheme, automatic cleaning can be realized to ensure that the dust removal effect is optimal. And is convenient for realizing mass production and manufacture.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: a dry type labyrinth electrostatic adsorption device comprises a shell, wherein a labyrinth electrostatic adsorption area is arranged in the shell;

the labyrinth electrostatic adsorption area comprises a first labyrinth electrostatic adsorption area and/or a second labyrinth electrostatic adsorption area;

the structure of the first labyrinth electrostatic adsorption zone is as follows: the side edges of the first U-shaped structures are connected with each other to form an adsorption column, and the first U-shaped structures extend from top to bottom; the openings of the adsorption columns are oppositely arranged, the free ends of the first U-shaped structures of one adsorption column mutually extend into the U-shaped openings of the first U-shaped structures of the opposite adsorption column, and the U-shaped openings of the adsorption columns are also extended by the free ends of the opposite first U-shaped structures, so that a labyrinth structure of multiple turn-back airflow is formed; one end of a labyrinth structure consisting of a plurality of first U-shaped structures is a first air inlet, and the other end of the labyrinth structure is a first air outlet; one of the adsorption columns is electrically connected with the main control circuit board.

The structure of the second labyrinth electrostatic adsorption zone is as follows: a plurality of second U-shaped structures with mutually connected sides are arranged in the second labyrinth electrostatic adsorption area, and the second U-shaped structures extend from top to bottom; the openings of the second U-shaped structures face the same side, each opening side of the second U-shaped structures is provided with an electrostatic electrode plate, and the electrostatic electrode plates extend into the openings of the second U-shaped structures; the electrostatic electrode plate is electrically connected with the main control circuit board.

In a preferable scheme, an electrostatic adsorption layer is arranged on the inner wall of the first U-shaped structure or the second U-shaped structure;

the electrostatic adsorption layer comprises one or a combination of a plurality of materials selected from metal, polyethylene, polypropylene, polyvinyl chloride, polyethylene terephthalate, polycarbonate, dimethyl ammonium formate, methyl acrylate, polyacrylamide and polyethylene glycol.

In a preferable scheme, a fluff adsorption layer is arranged on the inner wall of the first U-shaped structure or the second U-shaped structure.

In a preferable scheme, the bottom of each two adjacent first U-shaped structures or second U-shaped structures is provided with a fixing buckle, the cleaning pipe is fixed in the fixing buckle, the bottom of each first U-shaped structure or second U-shaped structure is provided with a cleaning port in a position contacting with the cleaning pipe, and the cleaning port is communicated with the cleaning pipe and used for cleaning the inner wall of each first U-shaped structure or second U-shaped structure through liquid spraying and/or air spraying.

In a preferred embodiment, the purge line is connected to a liquid and/or gas pump for supplying liquid and/or gas under pressure to the purge line.

In a preferred scheme, a dust collecting box is arranged at the lower end of the first U-shaped structure or the second U-shaped structure and used for collecting dust.

In a preferred scheme, a vibration device is fixedly arranged at the lower end of the first U-shaped structure or the second U-shaped structure and used for enabling dust to fall down through vibration.

In a preferred scheme, the horizontal section of the electrostatic electrode plate is of a T-shaped structure, the bottom structure of the T-shaped structure extends into the opening of the second U-shaped structure and keeps a distance with the second U-shaped structure, and the electrostatic connecting plates at the top of the T-shaped structure are connected with each other so that the second U-shaped structure and the electrostatic electrode plate form a labyrinth structure.

In the preferred scheme, a main control circuit board is provided with a booster circuit, a bridge rectifier circuit and a switch circuit for bypassing the bridge rectifier circuit, and when the dust removal works, the bridge rectifier circuit is electrically connected with an electrostatic electrode plate to output half-wave positive current; when the first U-shaped structure or the second U-shaped structure is cleaned, the booster circuit of the main control circuit board bypasses the bridge rectifier circuit through the communication of the switch circuit to directly output alternating current.

In the preferred proposal, the shell is also provided with an air outlet channel which is positioned at the downstream of the labyrinth electrostatic adsorption area,

the air outlet channel is communicated with an air inlet of the fan, a particulate matter sensor or a pressure sensor is arranged on the air outlet channel, and the particulate matter sensor or the pressure sensor is electrically connected with the main control circuit board;

when the data output by the particle sensor or the pressure sensor exceeds the standard, the main control circuit board starts the liquid pump or the gas pump to clean the labyrinth electrostatic adsorption area.

The utility model provides a pair of dry-type labyrinth electrostatic adsorption device adsorbs the structure of combining in addition with static through the adoption with the dry-type labyrinth, improves dust collection efficiency by a wide margin, can reduce the equipment volume when guaranteeing dust removal effect, and the gauge height of ventilating moreover, the pressure drag is little, can save the consumptive material in a large number. In a preferred scheme, the labyrinth electrostatic adsorption area formed by the first U-shaped structure or the second U-shaped structure and the electrostatic electrode plates which are arranged in an array manner and are opposite to each other is adopted, so that the ventilation flow rate, namely the treatment capacity of air dust removal can be conveniently adjusted according to an application scene, for example, the treatment capacity is adjusted in a structure from one row to multiple rows. And the U-shaped structure is convenient for realizing mass production so as to reduce the processing cost. Can be according to the signal of particulate matter sensor or pressure sensor collection, clear up maze electrostatic adsorption district automatically to ensure dust removal effect. The utility model discloses can reduce the burden of people's respiratory system under the indoor environment by a wide margin, reduce the emergence probability of allergic rhinitis, the recovery effect of the health function when improving indoor rest.

Drawings

The invention will be further explained with reference to the following figures and examples:

fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a sectional view a-a of fig. 1.

Fig. 3 is a sectional view B-B of fig. 1.

Fig. 4 is the utility model discloses the overall structure schematic diagram of well side air-out structure.

Fig. 5 is a schematic structural view of the first U-shaped structure of the present invention.

Fig. 6 is a schematic view of the second U-shaped structure and the electrostatic electrode plate according to the present invention.

Fig. 7 is a block diagram of a control structure of the present invention.

Fig. 8 is a schematic diagram of the structure of the middle electrostatic power supply of the present invention.

In the figure: the air cleaner comprises a shell 1, a control panel 2, a fan 3, a liquid pump motor 4, a liquid pump 5, a main control circuit board 6, a main control chip 60, a booster circuit 61, a bridge rectifier circuit 62, a switch circuit 63, a first labyrinth electrostatic adsorption area 7, a first U-shaped structure 71, a first cleaning pipe 72, a cleaning opening 73, a first air inlet 74, a first air outlet 75, a fluff adsorption layer 76, a fixing buckle 77, a second labyrinth electrostatic adsorption area 8, a second U-shaped structure 81, a second cleaning pipe 82, an electrostatic electrode plate 83, a second air inlet 84, a second air outlet 85, a ventilation branch pipe 86, an electrostatic adsorption layer 87, an electrostatic connection plate 88, an ash collection box 9, an air inlet panel 10, an air outlet channel 11, a gas pump 12, an air pump motor 13, a particulate matter sensor 14, a pressure sensor 15 and a vibration device 16.

Detailed Description

Example 1:

as shown in fig. 1 to 3, a dry type labyrinth electrostatic adsorption device includes a housing 1, wherein a labyrinth electrostatic adsorption region is disposed in the housing 1;

the labyrinth electrostatic adsorption zone comprises a first labyrinth electrostatic adsorption zone 7 and/or a second labyrinth electrostatic adsorption zone 8; in this example, the first labyrinth electrostatic adsorption region 7 and/or the second labyrinth electrostatic adsorption region 8 may be provided individually or in combination.

The structure of the first labyrinth electrostatic adsorption zone 7 is as follows: the sides of the first U-shaped structures 71 are connected with each other to form an adsorption column, the first U-shaped structures 71 extend from top to bottom, and the structures facilitate the adsorbed dust to fall down, such as into the dust collecting box 9; the openings of the adsorption columns are arranged oppositely, the free ends of the first U-shaped structures 71 of one adsorption column mutually extend into the U-shaped openings of the first U-shaped structures 71 of the opposite adsorption column, and the U-shaped openings of the first U-shaped structures 71 of the adsorption columns are also extended by the free ends of the first U-shaped structures 71 of the opposite adsorption column, so that a labyrinth structure of multiple turn-back airflow is formed. One end of the labyrinth structure formed by the plurality of first U-shaped structures 71 is a first air inlet 74, and the other end of the labyrinth structure is a first air outlet 75; one of the adsorption columns is electrically connected with the main control circuit board 6, and the other adsorption column is grounded. Preferably, the adsorption column connected to the main control circuit board 6 is made of a conductive material such as metal or graphite, or is provided with a conductive coating such as metal or graphite. The adsorption effect of the structure is better, and the cost is reduced through large-scale manufacturing.

The structure of the second labyrinth electrostatic adsorption zone 8 is as follows: a plurality of second U-shaped structures 81 with mutually connected sides are arranged in the second labyrinth electrostatic adsorption zone 8, and the second U-shaped structures 81 extend from top to bottom; the openings of the second U-shaped structures 81 face the same side, an electrostatic electrode plate 83 is arranged on each opening side of the second U-shaped structures 81, and the electrostatic electrode plates 83 extend into the openings of the second U-shaped structures 81; the electrostatic electrode plate 83 is electrically connected to the main control circuit board 6, and the second U-shaped structure 81 is grounded. In a preferred embodiment, as shown in fig. 6, the electrostatic electrode plate 83 has a "T" shaped horizontal cross-section, a bottom structure of the "T" shaped horizontal cross-section extends into the opening of the second U-shaped horizontal cross-section 81 and is spaced apart from the second U-shaped horizontal cross-section 81, and the electrostatic connection plates 88 at the top of the "T" shaped horizontal cross-section are connected to each other, so that the second U-shaped horizontal cross-section 81 and the electrostatic electrode plate 83 form a labyrinth structure. The structure has better electrostatic adsorption effect, and is particularly suitable for removing small-particle dust, such as dust below PM 10.

In a preferred scheme, as shown in fig. 5 and 6, an electrostatic adsorption layer 87 is arranged on the inner wall of the first U-shaped structure 71 or the second U-shaped structure 81;

the electrostatic adsorption layer 87 comprises a combination of one or more materials selected from metal, polyethylene, polypropylene, polyvinyl chloride, polyethylene terephthalate, polycarbonate, dimethyl ammonium formate, methyl acrylate, polyacrylamide and polyethylene glycol. With the structure, the dust adsorption effect is improved.

In a preferred embodiment, as shown in fig. 5, a fluff adsorption layer 76 is provided on the inner wall of the first U-shaped structure 71 or the second U-shaped structure 81. With the structure, the dust adsorption effect is improved.

In a preferred embodiment, as shown in fig. 5, a fixing buckle 77 is provided at the bottom of two adjacent first U-shaped structures 71 or second U-shaped structures 81, a cleaning tube is fixed in the fixing buckle 77, a cleaning port 73 is provided at the position where the bottom of the first U-shaped structure 71 or second U-shaped structure 81 contacts with the cleaning tube, and the cleaning port 73 is communicated with the cleaning tube and is used for cleaning the inner wall of the first U-shaped structure 71 or second U-shaped structure 81 by spraying and/or jetting air. With this structure, the installation space can be saved.

Preferably, the cleaning tube is connected to a liquid pump 5 and/or a gas pump 12, as in fig. 1, for supplying liquid and/or gas under pressure to the cleaning tube.

Preferably, as shown in fig. 1, a dust box 9 is provided at the lower end of the first U-shaped structure 71 or the second U-shaped structure 81 for collecting dust. Preferably, a liquid is provided in the dust-collecting box 9 to retain dust and avoid re-lifting.

Preferably, as shown in fig. 1, a vibration device 16 is fixed to a lower end of the first U-shaped structure 71 or the second U-shaped structure 81 for dropping dust by vibration. Preferably, into the trap 9.

In a preferred embodiment, as shown in fig. 8, the main control circuit board 6 is provided with a voltage boost circuit 61 and a bridge rectifier circuit 62, and is further provided with a switch circuit 63 for bypassing the bridge rectifier circuit 62, when the dust removal operation is performed, the bridge rectifier circuit is electrically connected with the electrostatic electrode plate 83 or the first U-shaped structure 71 to output a half-wave positive current, and when the first U-shaped structure 71 or the second U-shaped structure 81 is cleaned, the voltage boost circuit 61 of the main control circuit board 6 bypasses the bridge rectifier circuit 62 to directly output an alternating current. The booster circuit 61 adopts an inverter chopper circuit to convert commercial power alternating current into direct current, transform the direct current into 5-6 ten thousand volts of high-voltage current, then convert the direct current into alternating current by using a thyristor, convert the alternating current into half-wave positive current with the frequency of 4-50 Khz through a bridge rectifier circuit 62, and form a pulse electrostatic field so as to reduce energy consumption while ensuring a dust removal effect. When bypassing the bridge rectifier circuit 62, a high-voltage alternating current of 5-6 ten thousand volts at most is output for removing the electrostatic field, which is convenient for cleaning the adsorbed particles.

In a preferred embodiment, as shown in fig. 1, an air outlet duct 11 is further provided in the housing 1, and the air outlet duct 11 is located downstream of the electrostatic adsorption zone of the labyrinth, in this case, the downstream is based on the sequence of air intake.

The air outlet channel 11 is communicated with an air inlet of the fan 3, the air outlet channel 11 is provided with a particulate matter sensor 14 or a pressure sensor 15, and the particulate matter sensor 14 or the pressure sensor 15 is electrically connected with the main control circuit board 6;

when the data output by the particle sensor 14 or the pressure sensor 15 exceeds the standard, the main control circuit board 6 starts the liquid pump 5 or the gas pump 12 to clean the labyrinth electrostatic adsorption area.

The inventor finds that the dust removal effect of the utility model roughly follows the following law:

1-(1-q)ⁿ %；

wherein q is the dust removal efficiency of the single-stage U-shaped structure, and n is the stage number of the U-shaped structure. The dust removal effect of the single-stage U-shaped structure is related to the electrostatic voltage, the space between the U-shaped structures or the space between the electrostatic electrode plate and the U-shaped structures and the air flow rate. The actual measurement shows that the dust removal efficiency of the single-stage U-shaped structure is about 40% -80%. Calculating according to the standard value of the average PM2.5 value of 250 mu g/m in 24 hours under the severe pollution condition, calculating according to the average single-stage dust removal efficiency of 60 percent, and achieving the excellent air grade of 0.16 mu g/m for the high-speed cultivation after the adsorption of the U-shaped structure of the 8-stage. Therefore the utility model discloses an equipment can be continuous provides the air-purifying of outstanding air classification. And by arranging the multiple rows of U-shaped structures in an array manner, as shown in figures 2 and 3, the purification treatment capacity of the air can be greatly improved. Especially advantageous is, the utility model discloses need not the filter core structure that can't resume, the pollution problem of the problem that the filter core blockked up and abandonment filter core after using a period can not appear, can save use cost by a wide margin.

During the use, put into the bottom of casing 1 with the ash-collecting box 9 that is equipped with the adsorption liquid, take off air inlet panel 10, preferably, still be equipped with on the air inlet panel 10 and just strain the filter screen to the air is just strained, mainly blocks most fibre, the fibre that drops on the fabrics such as hair and clothes. The first labyrinth electrostatic adsorption area 7 and/or the second labyrinth electrostatic adsorption area 8 are/is placed into the shell 1 from the position of the air inlet panel 10. After self-checking, start fan 3, the air is discharged through fan 3 from air outlet duct 11 behind air inlet panel 10, first maze electrostatic absorption district 7 and/or second maze electrostatic absorption district 8. In the first labyrinth electrostatic adsorption area 7 and the second labyrinth electrostatic adsorption area 8, due to the labyrinth structure and the centrifugal effect, particles in dust are positively charged close to the electrostatic field and are adsorbed by the U-shaped structure connected with the negative electrode, and especially the adsorption effect of small particles lower than PM10 is better. When the particulate matter sensor 14 detects that the content of the particulate matter in the air outlet duct 11 exceeds the standard, the main control chip 60 of the main control circuit board 6 controls the fan 3 to stop rotating, the switch circuit 63 is closed, and the booster circuit 61 directly outputs alternating current, so that the electrostatic field is neutralized, and the adsorption force of dust is reduced. Meanwhile, the main control chip 60 controls the vibration device 16 to act. Preferably, the vibration device 16 is a vibrator driven by a piezoelectric element, and causes dust to fall from the electrostatic adsorption layer and enter the dust box 9. After the air inlet panel 10 is used for a period of time, for example, 1 to 3 days, the air inlet panel 10 is taken down, the labyrinth electrostatic adsorption area is taken out, the dust collecting box 9 is cleaned, and the clean adsorption liquid is replaced. Before use, the main control circuit board 6 performs electret on the electrostatic adsorption layer of the first U-shaped structure 71 or the second U-shaped structure 81 again to form an electrostatic field.

The above embodiments are merely preferred technical solutions of the present invention, and should not be considered as limitations of the present invention, and the features in the embodiments and the examples in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention shall be defined by the claims and the technical solutions described in the claims, including the technical features of the equivalent alternatives as the protection scope. Namely, equivalent alterations and modifications within the scope of the invention are also within the scope of the invention.

Claims

1. The utility model provides a dry-type maze electrostatic absorption device, includes casing (1), characterized by: a labyrinth electrostatic adsorption area is arranged in the shell (1);

the labyrinth electrostatic adsorption zone comprises a first labyrinth electrostatic adsorption zone (7) and/or a second labyrinth electrostatic adsorption zone (8);

the structure of the first labyrinth electrostatic adsorption zone (7) is as follows: the side edges of the first U-shaped structures (71) are connected with each other to form an adsorption column, and the first U-shaped structures (71) extend from top to bottom; the openings of the adsorption columns are oppositely arranged, the free ends of the first U-shaped structures (71) of one adsorption column mutually extend into the U-shaped openings of the first U-shaped structures (71) of the opposite adsorption column, and the U-shaped openings of the adsorption columns are also extended by the free ends of the first U-shaped structures (71) which are opposite to each other, so that a labyrinth structure of multiple-time turn-back airflow is formed; one end of a labyrinth structure formed by the plurality of first U-shaped structures (71) is a first air inlet (74), and the other end of the labyrinth structure is a first air outlet (75); one adsorption column is electrically connected with the main control circuit board (6);

the structure of the second labyrinth electrostatic adsorption zone (8) is as follows: a plurality of second U-shaped structures (81) with mutually connected sides are arranged in the second labyrinth electrostatic adsorption area (8), and the second U-shaped structures (81) extend from top to bottom; the openings of the second U-shaped structures (81) face the same side, each opening side of the second U-shaped structures (81) is provided with an electrostatic electrode plate (83), and the electrostatic electrode plates (83) extend into the openings of the second U-shaped structures (81); the electrostatic electrode plate (83) is electrically connected with the main control circuit board (6).

2. The dry labyrinth electrostatic adsorption device as claimed in claim 1, wherein: an electrostatic adsorption layer (87) is arranged on the inner wall of the first U-shaped structure (71) or the second U-shaped structure (81).

3. The dry labyrinth electrostatic adsorption device as claimed in claim 1, wherein: and a fluff adsorption layer (76) is arranged on the inner wall of the first U-shaped structure (71) or the second U-shaped structure (81).

4. The dry labyrinth electrostatic adsorption device as claimed in claim 1, wherein: the cleaning device is characterized in that fixing buckles (77) are arranged at the bottoms of two adjacent first U-shaped structures (71) or second U-shaped structures (81), the cleaning pipe is fixed in the fixing buckles (77), a cleaning port (73) is arranged at the position where the bottom of each first U-shaped structure (71) or second U-shaped structure (81) is contacted with the cleaning pipe, and the cleaning port (73) is communicated with the cleaning pipe and used for cleaning the inner wall of each first U-shaped structure (71) or second U-shaped structure (81) through liquid spraying and/or air spraying.

5. The dry labyrinth electrostatic adsorption device as claimed in claim 1, wherein: the cleaning tube is in communication with a liquid pump (5) and/or a gas pump (12) to supply the cleaning tube with liquid and/or gas under pressure.

6. The dry labyrinth electrostatic adsorption device as claimed in claim 1, wherein: a dust collecting box (9) is arranged at the lower end of the first U-shaped structure (71) or the second U-shaped structure (81) and is used for collecting dust.

7. The dry labyrinth electrostatic adsorption device as claimed in claim 1 or 5, wherein: and a vibration device (16) is fixedly arranged at the lower end of the first U-shaped structure (71) or the second U-shaped structure (81) and is used for enabling dust to fall down through vibration.

8. The dry labyrinth electrostatic adsorption device as claimed in claim 1, wherein: the horizontal section of the electrostatic electrode plate (83) is of a T-shaped structure, the bottom structure of the T-shaped structure extends into the opening of the second U-shaped structure (81) and keeps a distance with the second U-shaped structure (81), and electrostatic connecting plates (88) at the top of the T-shaped structure are connected with each other, so that the second U-shaped structure (81) and the electrostatic electrode plate (83) form a labyrinth structure.

9. The dry labyrinth electrostatic adsorption device as claimed in claim 1, wherein: the main control circuit board (6) is provided with a booster circuit (61), a bridge rectifier circuit (62) and a switch circuit (63) for bypassing the bridge rectifier circuit (62), and when dust removal works, the bridge rectifier circuit is electrically connected with the electrostatic electrode plate (83) to output half-wave positive current; when the first U-shaped structure (71) or the second U-shaped structure (81) is cleaned, the boosting circuit (61) of the main control circuit board (6) bypasses the bridge rectification circuit (62) through the communication of the switch circuit (63) to directly output alternating current.

10. The dry labyrinth electrostatic adsorption device as claimed in any one of claims 1 to 6 and 8 to 9, wherein: the shell (1) is also provided with an air outlet channel (11), the air outlet channel (11) is positioned at the downstream of the labyrinth electrostatic adsorption area,

the air outlet channel (11) is communicated with an air inlet of the fan (3), a particulate matter sensor (14) or a pressure sensor (15) is arranged on the air outlet channel (11), and the particulate matter sensor (14) or the pressure sensor (15) is electrically connected with the main control circuit board (6);

when the data output by the particle sensor (14) or the pressure sensor (15) exceeds the standard, the main control circuit board (6) starts the liquid pump (5) or the gas pump (12) to clean the labyrinth electrostatic adsorption area.