CN114110830A

CN114110830A - Casing and electrostatic decontamination device

Info

Publication number: CN114110830A
Application number: CN202010876694.0A
Authority: CN
Inventors: 徐逸
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-27
Filing date: 2020-08-27
Publication date: 2022-03-01

Abstract

A casing comprises a main body and an electromagnetic shielding layer. The main body has a housing and a cover, the housing and the cover are made of insulating material, and the housing has a mounting opening. An object can be placed inside the main body through the mounting opening. The electromagnetic shielding layer includes a first conductive layer and a second conductive layer, the first conductive layer is disposed on the inner wall of the housing, and the second conductive layer is disposed on the surface of the cover facing the mounting opening. When the cover body is operated to seal the mounting opening of the shell body, the first conducting layer is electrically connected with the second conducting layer and surrounds the outer side of the object, and therefore the electromagnetic shielding effect is achieved. An electrostatic decontamination apparatus is also disclosed, in which the electromagnetic shielding layer surrounds the outside of the electrostatic adsorption component therein to prevent the electric field generated by the electrostatic adsorption component from affecting the external electric field.

Description

Casing and electrostatic decontamination device

Technical Field

The present invention relates to an apparatus for purifying air; in particular to a machine shell and an electrostatic decontamination device.

Background

As air pollution becomes more serious, people and governments increasingly pay more attention to the influence of air pollution on the environment and physical health, and therefore, air purification devices are continuously added at home or in the discharge pipeline of a factory to maintain the air quality. An electrostatic cleaning apparatus for air cleaning generally includes a housing, an electrostatic adsorbing assembly, a first filter, and a second filter. The casing of the electrostatic decontamination device is provided with an air inlet and an air outlet, wherein the electrostatic adsorption component, the first filter screen and the second filter screen are all arranged in the casing, the first filter screen corresponds to the air inlet, the second filter screen corresponds to the air outlet, and the electrostatic adsorption component is positioned between the first filter screen and the second filter screen. Therefore, after the air enters the casing from the air inlet, the air firstly passes through the first filter screen to filter larger particles in the air, suspended particles in the air are filtered when passing through the electrostatic adsorption component, and then the air is discharged out of the casing from the air outlet, so that the effect of purifying the air is achieved.

In order to avoid the electrostatic field generated by the electrostatic adsorption component in the electrostatic decontamination apparatus from affecting the external electromagnetic field, a metal casing, such as a stainless steel casing, is used as the shield of the electrostatic adsorption component, so that the electromagnetic shielding effect can be achieved. However, the metal casing is heavy, which is not easy to carry and consumes physical strength; in addition, the surfaces of the metal casing are formed by manual welding, which requires a lot of time and manpower to complete, and thus the production efficiency is low. There is a need to solve the above-mentioned problems.

Disclosure of Invention

In view of the above, the present invention provides a housing and an electrostatic decontamination apparatus, wherein the electromagnetic shielding layer of the housing and the electromagnetic shielding layer of the electrostatic decontamination apparatus have electromagnetic shielding effects; in addition, the main body of the casing and the main body of the electrostatic decontamination device are made of light materials, so that the overall weight is reduced, and the transportation is facilitated.

In order to achieve the above object, the present invention provides a housing, which includes a main body and an electromagnetic shielding layer. The main body is provided with a shell and a cover body, and the shell and the cover body are made of insulating materials; the shell is provided with a mounting opening, and an object can be placed in the shell through the mounting opening; the cover body can be operated to close or open the mounting opening. The electromagnetic shielding layer comprises a first conducting layer and a second conducting layer, and when the cover body is operated to seal the mounting opening, the first conducting layer is electrically connected with the second conducting layer and surrounds the outer side of the object; the first conductive layer is arranged on the inner wall of the shell, and the second conductive layer is arranged on the surface of the cover body facing the mounting opening.

The invention provides an electrostatic decontamination device, which comprises a main body, an electromagnetic shielding layer, an electrostatic adsorption component and a power supply. The main body is provided with a shell and a cover body, wherein the shell and the cover body are made of insulating materials; the shell is provided with a mounting opening, an air inlet and an air outlet, and the mounting opening, the air inlet and the air outlet are respectively arranged on different side surfaces of the shell; the cover body can be operated to close or open the mounting opening. The electromagnetic shielding layer comprises a first conducting layer, a second conducting layer, a first filter screen and a second filter screen; when the cover body is operated to seal the mounting opening, the first conducting layer is electrically connected with the second conducting layer; the first conductive layer system is arranged on the inner wall of the shell, and the second conductive layer system is arranged on the surface of the cover body facing the mounting opening; the first filter screen set up in the inside of casing just corresponds the income wind gap, the second filter screen set up in the inside of casing just corresponds the air outlet, first filter screen reaches the second filter screen is electric connection respectively first conducting layer or the second conducting layer. The electrostatic adsorption component can be arranged in the shell through the mounting port and is used for purifying air; when the cover body is operated to close the mounting opening, the electromagnetic shielding layer surrounds the outer side of the electrostatic adsorption component. The power supply is fixedly connected to the main body and is used for providing power for the electrostatic adsorption component.

The present invention further provides a housing including a housing and a cover. The shell is provided with a mounting port; an object can be placed in the interior of the shell or taken out of the interior of the shell through the mounting opening; the shell comprises a first conducting layer; and the cover body comprises a covering part and a second conducting layer, wherein the covering part can be operated to close or open the installation opening, the covering part is made of insulating materials, and the second conducting layer is arranged on the surface of the covering part facing the installation opening; when the covering member is operated to close the mounting opening, the first conductive layer is electrically connected with the second conductive layer and surrounds the outer side of the object.

The invention further provides an electrostatic decontamination device, which comprises a shell, a cover body, a first filter screen, a second filter screen, an electrostatic adsorption component and a power supply. The shell is provided with a mounting opening, an air inlet and an air outlet, and the mounting opening, the air inlet and the air outlet are respectively arranged on different side surfaces of the shell; the shell comprises a first conducting layer; the cover body comprises a covering part and a second conducting layer, wherein the covering part can be operated to close or open the installation opening, the covering part is made of insulating materials, and the second conducting layer is arranged on the surface of the covering part facing the installation opening; when the covering part is operated to seal the mounting opening, the first conducting layer is electrically connected with the second conducting layer; the first filter screen and the second filter screen are arranged inside the shell and respectively correspond to the air inlet and the air outlet; the first filter screen and the second filter screen are respectively and electrically connected with the first conducting layer or the second conducting layer; the electrostatic adsorption component can be arranged in the shell through the mounting port and is used for purifying air; when the cover is operated to close the mounting opening, the first conducting layer and the second conducting layer surround the outer side of the electrostatic adsorption component; and the power supply is fixedly connected to the shell and used for providing power for the electrostatic adsorption component.

The invention has the advantages that the electromagnetic shielding layer of the shell and the electromagnetic shielding layer of the electrostatic decontamination device are used as shielding bodies, and the mutual influence of an electromagnetic field in the electromagnetic shielding layer and an electromagnetic field outside the electromagnetic shielding layer is avoided. In addition, the shell and the cover body of the machine shell and the cover body of the electrostatic decontamination device are made of light-weight insulating materials, so that the whole weight is reduced, the carrying is facilitated, and the labor is saved.

Drawings

Fig. 1 is a perspective view of a housing in a preferred embodiment of the invention.

FIG. 2 is a schematic view of the housing in the preferred embodiment, showing the cover in an open state.

Fig. 3 is a top view of fig. 1.

Fig. 4 is a sectional view taken in the direction 4-4 of fig. 3.

Fig. 5 is an exploded view of the electrostatic discharge device according to the preferred embodiment.

Fig. 6 is a sectional view of the housing of another preferred embodiment of the present invention, similar to fig. 4.

Fig. 7 is a perspective view of a housing according to still another preferred embodiment of the present invention.

Detailed Description

In order to more clearly illustrate the present invention, preferred embodiments are described in detail below with reference to the accompanying drawings. Referring to fig. 1 to 4, a casing 100 according to a preferred embodiment of the present invention is shown, wherein the casing 100 includes a main body 10 and an electromagnetic shielding layer 20.

The main body 10 includes a housing 12, a cover 14, a copper liner 16 and a pivot 18. The casing 12 is a hollow structure, and different side surfaces of the casing 12 are provided with a mounting opening 12a, an air inlet 12b and an air outlet 12c, the air inlet 12b is arranged opposite to the air outlet 12c, the inner wall of the casing 12 is provided with a first guide rail 122 and a second guide rail 124, the first guide rail 122 corresponds to the air inlet 12b, the second guide rail 124 corresponds to the air outlet 12c, and the long axis directions of the first guide rail 122 and the second guide rail 124 are parallel to the opening direction of the mounting opening 12 a. The copper liner 16 includes a head portion 162 and a body portion 164, the body portion 164 of the copper liner 16 is longitudinally disposed through the inside of the lid 14, and the head portion 162 of the copper liner 16 abuts the upper side surface 14a of the lid 14. One end of the pivot 18 is inserted into the copper lining 16 and electrically connected to the copper lining 16, and the other end is fixed to the housing 12, so that the cover 14 can be rotated to close or open the mounting opening 12a of the housing 12. As shown in fig. 4, the underside of the cover 14 is pivotally connected to the housing 12 by another pivot 18, however, the pivot 18 on the underside may alternatively be directly inserted through the cover 14 or indirectly inserted through the cover by being inserted through another copper liner. The copper bush is provided in the present embodiment for the purpose of serving as a conductive medium in addition to the rotating bearing and the fixed pivot, which will be described in detail later.

Further, the housing 12 and the cover 14 in this embodiment are made of an insulating material, including but not limited to plastic. The use of the lightweight plastic for the housing 12 and the cover 14 helps to reduce the weight of the overall cabinet 100, requires less effort in transportation, and reduces the production cost of the cabinet 100.

The electromagnetic shielding layer 20 of the casing 100 includes a first conductive layer 22, a second conductive layer 24 and a conductive member. The first conductive layer 22 and the second conductive layer 24 are made of conductive materials including, but not limited to, aluminum, platinum, stainless steel, copper, chromium, nickel, carbon fiber, or combinations thereof. The first conductive layer 22 is disposed on the inner wall of the housing 12 and electrically connects the first and

second tracks

122 and 124, and the second conductive layer 24 is disposed on the inner surface of the cover 14 facing the mounting opening 12a and partially protrudes upward to the side surface 14a of the cover 14 and electrically connects to the copper lining 16, i.e. the second conductive layer 24 is electrically connected to the pivot 18 through the copper lining 16. The conductive member in this embodiment is a wire 26, and the wire 26 is used to connect the outer surface of the pivot 18 and the first conductive layer 22 on the inner wall of the housing 12, whereby the first conductive layer 22 is electrically connected to the first conductive layer 22 through the copper lining 16, the pivot 18 and the wire 26.

More specifically, the first conductive layer 22 and the second conductive layer 24 are conductive films, and can be attached to the surfaces of the housing 12 and the cover 14 by, but not limited to, electroplating, chemical plating, and attaching.

In the present embodiment, as shown in fig. 5, the electrostatic discharge apparatus 1 further includes the housing 100, an electrostatic adsorption component 200, and a power supply 300. Wherein the electromagnetic shielding layer 20 of the casing 100 further comprises a first filter 28 and a second filter 29. The first filter 28 is inserted into a first guide rail 122 of the housing 12, and the second filter 29 is inserted into a second guide rail 124 of the housing 12. The first and

second filters

28, 29 are made of conductive material, such as stainless steel, and the first and

second filters

28, 29 are electrically connected to the first conductive layer 22 through the first and

second guide rails

122, 124, respectively. The first screen 28, the second screen 29, the first conductive layer 22 and the second conductive layer 24 constitute a shield, and the shield is grounded. Therefore, the electromagnetic field inside the shield body and the external electromagnetic field cannot be influenced mutually.

When the cover 14 is operated to pivot to close the mounting opening 12a, the first conductive layer 22 and the second conductive layer 24 surround to form a fluid channel, the two ends of the fluid channel are respectively a first filter 28 and a second filter 29, and the first filter 28 and the second filter 29 can prevent larger dirt such as dust or hair balls from entering the fluid channel.

The electrostatic adsorption module 200 of the electrostatic decontamination apparatus 1 is disposed inside the housing 12 through the mounting opening 12 a. The electrostatic clamping assembly 200 includes a frame 202, a high voltage set 204 and a low voltage set 206. The frame 202 is electrically connected to the first conductive layer 22, the high voltage set 204 and the low voltage set 206 are fixed on the frame 202, and the high voltage set 204 and the low voltage set 206 are not electrically connected to the frame 202. The high voltage group 204 and the low voltage group 206 are disposed adjacent to each other and are not electrically connected, wherein the high voltage group 204 is disposed between the low voltage group 206 and the first filter 28, and the low voltage group 206 is disposed between the high voltage group 204 and the second filter 29. When the cover 14 is operated to close the mounting opening 12a to form the fluid channel, the air passes through the high voltage set 204 and the low voltage set 206 in sequence, and the air is filtered by the electrostatic adsorption principle, so as to achieve the effect of purifying the air.

The power supply 300 includes a high voltage supply 302 and a low voltage supply 304, the high voltage supply 302 and the low voltage supply 304 are not electrically connected, and the high voltage supply 302 and the low voltage supply 304 are respectively and fixedly insulated from the inner surface of the cover 14. When the cover 14 is operated to close the mounting opening 12a of the housing 12, the high voltage supply 302 abuts against the high voltage group 204 of the electrostatic chuck assembly 200 to provide the high voltage group 204 current, and the low voltage supply 304 abuts against the low voltage group 206 of the electrostatic chuck assembly 200 to provide the low voltage group 206 current, wherein the power supply 300 supplies a voltage value of the high voltage group 204 to be greater than a voltage value of the low voltage group 206.

With the above-mentioned structure, when the cover 14 closes the mounting opening 12a and the power supply 300 is started, air enters from the air inlet 12b of the housing 12, and primarily filters larger particles in the air, such as gravel or fuzz balls, through the first filter 28, suspended particles in the air pass through the high voltage set 204 of the electrostatic adsorption component 200 to form charged particles, and then the charged particles are adsorbed on the surface of the low voltage set 206, and finally, the purified air is discharged from the air outlet 12c of the housing 12 through the second filter 29. In the process of energizing the electrostatic adsorption element 200, an electromagnetic field is generated, and the electromagnetic shielding layer 20 surrounding the outside of the electrostatic adsorption element 200 serves as a shielding body, so that the electromagnetic field generated by the electrostatic adsorption element 200 is prevented from influencing the electromagnetic field outside the electrostatic decontamination apparatus 1, i.e. signal interference is avoided, and surrounding people are also prevented from receiving high-energy electromagnetic radiation.

In summary, the housing and the cover of the electrostatic discharge device of the present invention are made of lightweight insulating material, such as plastic, which effectively reduces the weight of the electrostatic discharge device and facilitates transportation. In addition, the plastic shell and the cover body can be produced in a mold-opening manufacturing mode, and compared with the existing metal shell and the existing metal cover body, the plastic shell and the plastic cover body do not need to be additionally welded manually or other processing steps, so that the production efficiency is improved, and the labor cost is reduced. In addition, the electromagnetic shielding layer of the electrostatic decontamination device is used as a shielding body of the electrostatic adsorption component, so that the electromagnetic field generated by the electrostatic adsorption component is prevented from being influenced by the external electromagnetic field.

The present invention provides a housing 100A of another preferred embodiment, as shown in fig. 6, the first conductive layer 22 and the second conductive layer 24 of this embodiment are not electrically connected through a conductive wire and a copper liner. The conductive member in this embodiment is a spring 27, one end of the spring 27 is fixed on the inner wall of the housing 12 and electrically connected to the first conductive layer 22, and the other end thereof protrudes outward in the direction of the mounting opening 12 a. When the cover 14 closes the mounting opening 12a, the spring 27 is slightly compressed by the pressing of the cover 14, and is maintained to abut against the second conductive layer 24 by the compression elastic force. As a result, the first conductive layer 22 is electrically connected to the second conductive layer 24 through the spring 27. It should be noted that, in other practical applications, the first filter and the second filter of the electromagnetic shielding layer are not necessarily surrounded by the first conductive layer and the second conductive layer to form a shielding body by electrically connecting the first conductive layer, and the same effect can be achieved by electrically connecting the second conductive layer. In addition, in other practical applications, the first conductive layer and the second conductive layer are not necessarily electrically connected by a conductive member, and the first conductive layer may protrude outward from the inner wall of the housing to the periphery of the mounting opening, so that when the cover closes the mounting opening, the first conductive layer is directly electrically connected with the second conductive layer.

In another preferred embodiment of the present invention, as shown in fig. 7, the housing 12B of the housing 100B is made of a conductive metal, and the inner wall of the housing 12B is defined as a first conductive layer 22B. The cover of the housing 100B includes a covering member 15B and a second conductive layer (not shown in fig. 7, but similar to the second conductive layer 24 shown in fig. 2). Wherein the cover 15B is operable to close or open the mounting opening (not shown in fig. 7, but similar to the mounting opening 12a shown in fig. 2), and the cover 15B is made of an insulating material, such as plastic, but not limited thereto. The second conductive layer is disposed on a surface of the covering member 15B facing the mounting opening. Referring to fig. 7, when the covering member 15B is located at a position for closing the mounting opening, the first conductive layer 22B is electrically connected to the second conductive layer, so as to form an electromagnetic shielding layer.

In the embodiment of the present invention, the housing 100B includes a base 40, and the base 40 is detachably disposed at the bottom of the housing 12B. The base 40 is provided with a drip pan 42, the drip pan 42 being positioned below a drain (not shown) in the bottom of the housing 12B. Therefore, when the casing 12B is used as an electrostatic oil stain removing device, the waste oil collected and filtered in the casing 12B can be converged in the liquid collecting tray 42, so as to remove the oil stain. It should be noted that the base 40 and the drip pan 42 are made of plastic, so as to make the whole casing 100B light and reduce the production cost of the casing 100B; in some practical cases, if the metal casing 12B is corroded and needs to be replaced, the plastic cover 15B, the base 40 and the drip pan 42 can be recycled, so as to avoid resource waste. In addition, the base 40 made of plastic can prevent the metal casing 12B of the casing 100B from directly contacting and rubbing with a wet ground, so as to reduce the corrosion of the metal casing 12B, and further improve the reliability and durability of the whole casing 100B.

The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications to the present invention as described and claimed should be included in the scope of the present invention.

Description of the reference numerals

[ invention ]

1: electrostatic decontamination device

100. 100A, 100B: casing (CN)

10: main body

12. 12B: shell body

12 a: mounting port

12 b: air inlet

12 c: air outlet

122: first guide rail

124: second guide rail

14: cover body

14 a: side surface

15B: covering member

16: copper lining

162: head part

164: body part

18: pivot shaft

20: electromagnetic shielding layer

22. 22B: first conductive layer

24: second conductive layer

26: conducting wire

27: spring

28: first filter screen

29: second filter screen

200: electrostatic absorption assembly

202: rack body

204: high voltage group

206: low voltage group

300: power supply

302: high voltage supply

304: low voltage supply

40: base seat

42: liquid collecting disc

Claims

1. An enclosure, comprising:

a main body having a housing and a cover, the housing and the cover being made of insulating material; the shell is provided with a mounting opening, and an object can be placed in the shell through the mounting opening; the cover body can be operated to close or open the mounting opening; and

the electromagnetic shielding layer comprises a first conducting layer and a second conducting layer, and when the cover body is operated to seal the mounting opening, the first conducting layer is electrically connected with the second conducting layer and surrounds the outer side of the object; the first conductive layer is arranged on the inner wall of the shell, and the second conductive layer is arranged on the surface of the cover body facing the mounting opening.

2. The apparatus of claim 1, wherein the electromagnetic shielding layer has a conductive member contacting the first conductive layer and the second conductive layer to conduct the first conductive layer and the second conductive layer to each other.

3. The casing of claim 1, wherein the main body comprises a pivot, and the cover is pivotally disposed on the casing through the pivot; the cover body can be operated to rotate to close or open the mounting opening of the shell.

4. The enclosure of claim 1, wherein the insulating material comprises plastic.

5. The enclosure of claim 1, wherein the material of the first and second conductive layers comprises aluminum, platinum, stainless steel, copper, chromium, nickel, carbon fiber, or combinations thereof.

6. An electrostatic decontamination apparatus, comprising:

a main body having a housing and a cover, the housing and the cover being made of insulating material; the shell is provided with a mounting opening, an air inlet and an air outlet, and the mounting opening, the air inlet and the air outlet are respectively arranged on different side surfaces of the shell; the cover body can be operated to close or open the mounting opening;

an electromagnetic shielding layer including a first conductive layer, a second conductive layer, a first filter and a second filter; when the cover body is operated to seal the mounting opening, the first conducting layer is electrically connected with the second conducting layer; the first conductive layer system is arranged on the inner wall of the shell, and the second conductive layer system is arranged on the surface of the cover body facing the mounting opening; the first filter screen is arranged in the shell and corresponds to the air inlet, the second filter screen is arranged in the shell and corresponds to the air outlet, and the first filter screen and the second filter screen are respectively and electrically connected with the first conducting layer or the second conducting layer;

the electrostatic adsorption component can be arranged in the shell through the mounting port and is used for purifying air; when the cover body is operated to close the mounting opening, the electromagnetic shielding layer surrounds the outer side of the electrostatic adsorption component; and

a power supply, fixedly connected to the main body, for providing power to the electrostatic adsorption component.

7. The electrostatic decontamination apparatus according to claim 6, wherein when the cover closes the mounting opening, the first conductive layer and the second conductive layer surround to form a fluid channel, and the two ends of the fluid channel are respectively the first filter and the second filter.

8. The electrostatic precipitator of claim 6, wherein the main body includes a pivot, and the cover is pivotally disposed on the housing through the pivot; the cover body can be operated to rotate to close or open the mounting opening of the shell.

9. The electrostatic decontamination device of claim 6, wherein the electromagnetic shielding layer has a conductive member contacting the first conductive layer and the second conductive layer to conduct the first conductive layer and the second conductive layer to each other.

10. The electrostatic abatement apparatus of claim 6, wherein the insulating material comprises a plastic.

11. The electrostatic desmutting device of claim 6, wherein the material of the first and second conductive layers comprises aluminum, platinum, stainless steel, copper, chromium, nickel, carbon fiber, or combinations thereof.

12. An enclosure, comprising:

a housing having a mounting opening; an object can be placed in the shell or taken out of the shell through the mounting opening; the shell comprises a first conducting layer; and

a cover body including a covering member and a second conductive layer, wherein the covering member is operable to close or open the installation opening and is made of an insulating material, and the second conductive layer is disposed on a surface of the covering member facing the installation opening;

when the covering member is operated to close the mounting opening, the first conductive layer is electrically connected with the second conductive layer and surrounds the outer side of the object.

13. The apparatus of claim 12, further comprising a base disposed at the bottom of the housing and made of an insulating material.

14. The enclosure of claim 13, wherein the bottom of the housing has a drain port, and the base has a drip pan disposed directly below the drain port.

15. The enclosure of claim 13, wherein the insulating material comprises plastic.

16. An electrostatic decontamination apparatus, comprising:

the air inlet and the air outlet are respectively arranged on different side surfaces of the shell; the shell comprises a first conducting layer;

a cover body including a covering member and a second conductive layer, wherein the covering member is operable to close or open the installation opening and is made of an insulating material, and the second conductive layer is disposed on a surface of the covering member facing the installation opening; when the covering part is operated to seal the mounting opening, the first conducting layer is electrically connected with the second conducting layer;

the first filter screen and the second filter screen are arranged inside the shell and respectively correspond to the air inlet and the air outlet; the first filter screen and the second filter screen are respectively and electrically connected with the first conducting layer or the second conducting layer;

the electrostatic adsorption component can be arranged in the shell through the mounting port and is used for purifying air; when the cover is operated to close the mounting opening, the first conducting layer and the second conducting layer surround the outer side of the electrostatic adsorption component; and

a power supply fixed to the housing for providing power to the electrostatic adsorption component.

17. The electrostatic precipitator of claim 16, wherein the first conductive layer and the second conductive layer surround to form a fluid channel, and the two ends of the fluid channel are the first filter screen and the second filter screen respectively, when the cover member closes the installation opening.

18. The electrostatic precipitator of claim 16, wherein the housing comprises a pivot, and the cover is pivotally disposed on the housing via the pivot; the cover is operable to rotate to close or open the mounting opening of the housing.

19. The electrostatic precipitator of claim 16, comprising a conductive member contacting the first and second conductive layers to conduct the first and second conductive layers to each other.

20. The electrostatic precipitator of claim 16, wherein the base is disposed at a bottom of the housing, and the bottom of the housing has a drain outlet; the base is provided with a liquid collecting disc which is arranged right below the liquid outlet; wherein the base is made of an insulating material.

21. The electrostatic abatement apparatus of claim 20, wherein the insulating material comprises a plastic; the material of the first conductive layer and the second conductive layer comprises aluminum, platinum, stainless steel, copper, chromium, nickel, carbon fiber or a combination thereof.